Evaporative emission system purge flow performance during boost
Labor: 1.0. To diagnose the P0496 Hyundai code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
A vehicle that stored a P0497 code means that there’s a purging issue in the evaporative (EVAP) emissions control system, particularly a low flow condition. A faulty EVAP pressure sensor or purge solenoid, restricted EVAP canister, and damaged vacuum lines are common reasons why this code is set. If your vehicle logs this code, you might ...
If the PCM detects a failure during the intrusive test, a purge system performance fault is set (P0441). PURGE FLOW MONITOR IN BOOST: Turbocharged engines purge while the engine is in boost. This is achieved by having additional purge hoses and Hardware. The Boost purge monitor is used to check that this part of the Evaporative emissions system ...2018 Ford Escape OBD2 Code P0496 EVAP Flow During A Non-Purge Condition. Top Cars; ... (evaporative emission) Flow During A Non-Purge Condition, a problem usually caused by faults in the wiring, EVAP valve, or a mechanical issue. ... P2263 Turbo/Supercharger Boost System Performance; P2270 O2 Sensor Signal …P0466 is a diagnostic trouble code (DTC) for "Purge Flow Sensor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light …A few days ago my engine light came back on and was throwing multiple codes, P144C - Evap Emission System Purge Flow Performance During Boost. P0443 - Evap Emission System Purge Control Valve Circuit. P0446 - Evap Emission System Vent Control Circuit. P0010 - Intake (A) Camshaft Position Actuator Circuit / Open (Bank 1)The P0444 fault code refers to a problem with the Evaporative Emission Control System Purge Control Valve Circuit O. This system is responsible for controlling the flow rate of fuel vapor from the EVAP canister. The opening of the vapor bypass passage in the EVAP canister purge volume control solenoid valve is adjusted to regulate the flow rate ...Ford. Code: P144C. Definition: EVAP System Purge Flow Performance During Boost. Description: The EVAP check valve test is performed during minimal boost conditions, once per drive cycle, when entry conditions are met. This DTC sets when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test. Cause:On vehicles with an Evaporative Emission Control System (EVAP), fuel vapors from the gas tank are stored in a charcoal canister. Under precise operating conditions, the PCM opens the purge valve to draw the vapors from the canister into the engine's intake manifold. The vapors are then burned as part of the normal combustion process.
Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a Chevy Cavalier. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system's purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, they all ...The ECM decides whether there is an abnormality in the evaporative emission control system based on the vapor pressure sensor signal. DTCs P0441 and P0446 are recorded by the ECM when there is a malfunction in either the VSV for EVAP, the VSV for pressure switching valve, or in the vapor pressure sensor itself, or when evaporative emissions ...This is a quick video on showing how to check your evap purge valve for its most common failure without expensive equipment. Enjoy the video and thanks for w...mains at the set flow, then apply the smoke to the system. In some cases, the EVAP EMISSIONS DIAGNOSTICS BY THE NUMBERS Once the hand vacuum pump is connected to the purge line, slowly pump it, ap-plying only the normal vacuum that the on-board system uses to test the sys-tem. The vacuum applied on the gauge in this test is holding slightly ...At 127K miles, my '11 3.5 ecoboost got the CEL with code P144C - Evaporative Emission System Purge Check Valve Performance. I ordered this part: STANDARD MOTOR PRODUCTS CP932. I think the OEM part number is BL3Z9B325C. It sits on top of the engine just under the plastic cover.The purge valve, also known as the canister purge solenoid, is an essential part of your Ford Fusion's evaporative emission control system. Its primary function is to regulate the flow of fuel vapors from the charcoal canister to the engine. By controlling the timing and amount of these vapors entering the combustion process, the purge valve ...
Negative pressure not created in EVAP system when purge VSV turned ON (open) EVAP system pressure change less than 0.4 kPa-g (3.0 mmHg-g) when vent valve turned ON (closed) Atmospheric pressure change before and after purge flow monitor less than 0.1 kPa-g (0.75 mmHg-g) Purge VSV Connector/wire harness (Purge VSV - ECM)Got the check engine light pop up and pulled the code and it was p0496 (evaporative emission system high purge flow). The Truck hesitates after start up and at idle. No hesitation noted during acceleration. After doing some research online, it seems that code could be numerous items. Any clue on what a good place to starthe would be?1. The list of automotive Makes at the right edge of the screen. The currently selected ODB-ii codes is for the Buick makes. 2. Look up the other OBD II Trouble Codes, please use the search box. Enter the 5 character trouble codes in the search box and submit the search. 3.An evaporative emissions system large leak or no purge flow could be caused by all of the following EXCEPT: Group of answer choices a loose or missing crankcase oil filler cap a vapor management valve failed closed a canister vent failed in the open position a loose or missing fuel tank filler cap
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P0496 code definition. This is a generic code and it applies to all makes of vehicle, however, it does seem to be more prevalent in vehicles that come from GM. It means there is an issue with the purge flow in the evaporation system. Those who have Mazda, Kia, Hyundai, Honda, and Acura will find that the code's description is slightly different.Service Procedure. Visually inspect and push and pull on each of the following EVAP connections to verify a proper connection: Vapor line connections to the vacuum port side and pressure port side of the ejector. Refer to Figure 1 for 3.5L and Figure 2 for 2.7L. Vapor line connection at the port on air intake system (AIS) duct at throttle body ...See full list on 700r4transmissionhq.com The P0441 Dodge code is a generic powertrain code related to the evaporative emission control system. This code indicates that there is an issue with the purge flow in the system, which can be caused by a variety of issues. Common causes of this code include: 1. A faulty or stuck open purge valve.
1. Check engine light. This light is part of the car’s onboard diagnostics system. When it detects a problem (like a leak in the EVAP system), it will turn the light on. Keep in mind, though, that the check engine light can indicate many different problems, such as a faulty catalytic converter or oxygen sensors. 2.Programing Online PCM Land Rover Evoque L538! P144C Evaporative Emission System Purge Flow Performance During Boost DUY DUC WORKSHOP By DUY DUC WORKSHOP Facebook, Fits Range Rover 03 to 05 V8 PETROLJan 8, 2024 · The evap system high load purge line can impact vehicle performance by affecting fuel economy and engine efficiency. The purge line is responsible for directing excess fuel vapor from the evaporative emissions control system back into the engine for combustion. During high load conditions, such as accelerating or climbing hills, a large amount ... Re: Code P1441 Evaporative Emission System Flow During Non-Purge (torqueman2002) I had this same type code thrown on my 99 Chevy Silverado. Friend of mine who used to be a GM mech told me to replace the gas cap and the code would go away in about 2 weeks.Description: The PCM monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. This DTC sets when no purge flow, which is attributed to fuel vapor blockages or restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by ...P0466 is a diagnostic trouble code (DTC) for "Purge Flow Sensor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154 ...Diagnostic trouble code (DTC) P0452 stands for "Evaporative Control System Pressure Sensor Low Input.". This code is set by the car's primary computer (often referred to as the powertrain control module or PCM) when the EVAP sensor detects changes in pressure that are below specification. The PCM will trigger a P0452 when the sensor ...P0496 - Evaporative Emission (EVAP) System Flow During Non-Purge. So recently my 07 baseline sky has been acting crappy. First off it will long crank and sometimes not even start at all until 2 or 3 tries. Then when it finally does start up the RPMs will run at like 200-500 and die if i dont rev it up. The codes thrown are P0496 which what i ...
The P0451 code is defined as Evaporative Emission Control System Pressure Sensor/Switch Range/Performance. See also P0441 Code: Evaporative Emission Control System Incorrect Purge Flow This diagnostic trouble code is set by the PCM when it detects that the Evaporative Pressure Sensor (also known as a Fuel Tank Pressure Sensor) indicates ...
P1447 Nissan Description. In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control solenoid valve is open to admit purge flow.Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a Chevy Colorado. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system's purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, they all ...What Does the Evaporative emissions (EVAP) purge valve Do? All EVAP valves (Evaporative Emissions Purge Valve(s)) have two functions. The first is to allow for accumulated fuel vapors in the fuel system to be purged from the fuel tank/fuel system, and the second is to assist in sealing the fuel system during leak testing procedures that are performed by the PCM (Powertrain Control Module).Whether you are starting out or an established business, you can boost sales at a food truck festival and introduce yourself to new customers. Food truck festivals are events where...P0455 - Evaporative Emission System Leak Detected (Gross Leak/No Flow) Description: The powertrain control module (PCM) monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks.An important component in a vehicle's Evaporative Emission Control (EVAP) system, the canister purge valve restricts the fuel vapors that are made in your fuel tank from getting out in the atmosphere by trapping and holding them in a charcoal canister. When your vehicle's motor starts running at a regular speed, the EVAP system allows these vapors to be released into the motor where they ... The code P0441 means that the Evaporative control system purge flow is incorrect. The Evaporative control system (EVAP) prevents gasoline vapors from the fuel tank from escaping into the atmosphere. The EVAP system catches and stores gasoline vapors in a small box installed near the fuel tank called charcoal canister.
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Web code p144c, evaporative emission system purge flow performance during boost. 91355 views 6 replies 5 participants last post by deceptivecode,. The Fault Codes Were P018C Fuel Pressure Sensor B Circuit And P144C Evap System Purge. Web repair information for p144c ford code. F150ecoboost.net is the best ford f150 ecoboost …1. The list of automotive Makes at the right edge of the screen. The currently selected ODB-ii codes is for the Pontiac makes. 2. Look up the other OBD II Trouble Codes, please use the search box. Enter the 5 character trouble codes in the search box and submit the search. 3.DTC: P144C, mil is on. This is an, "Evaporative Emission System Purge Flow Performance During Boost" problem. Just wanted to consult the collective wisdom on it before I take it in. I'm an engineer and home mechanic, have done all sorts of major work to past cars but very specific (installed supercharger, exhaust, fixed lot of stuff)...Ratios can help you analyze a business' financial circumstances and performance. Cash flow on total assets ratio shows how a business uses its assets to generate cash flow, so you ...2018 Ford Escape OBD2 Code P0496 EVAP Flow During A Non-Purge Condition. Top Cars; ... P0441 Evaporative Emission System Incorrect Purge Flow; P0442 Evaporative Emission System Leak Detected (small leak) P0443 Evaporative (EVAP) Emission System Purge Control Valve Circuit ... P2263 Turbo/Supercharger Boost System Performance; P2270 O2 Sensor ...When using the Evaporative Emission Leak Detector With On Board Nitrogen Generator 218-522C or equivalent, the fuel level in the fuel tank must be less than 85% full. Normal Operation and Fault Conditions. For additional information on the EVAP system, refer to the Evaporative Emission (EVAP) Systems description. DTC Fault Trigger ConditionsGMC Terrain P0496 Meaning. P0496 is a universal OBDII trouble code. This means that regardless of which make or model of vehicle, the code will mean the same thing. The code technically stands for: Evaporative Emission System High Purge Flow. The EVAP system captures all fuel vapor from the fuel tank and sends them to the …U.S. regulations also have additional stipulations for the durability of EVAP systems, and an in-use verification programme which requires manufacturers to provide in-use exhaust and evaporative data for 1 year in service in low and high mileage vehicles, and 4 years in service in low and high mileage vehicles. Summary.If the PCM detects a failure during the intrusive test, a purge system performance fault is set (P0441). PURGE FLOW MONITOR IN BOOST: Turbocharged engines purge while the engine is in boost. This is achieved by having additional purge hoses and Hardware. The Boost purge monitor is used to check that this part of the Evaporative emissions system ... ….
Therefore, when an EVAP leak code is triggered when the computer engine recognizes a leak within the emissions system, this indicates that the sealing has been compromised. When an EVAP leak is detected the computer in your engine will generate the following codes: Code PP0442: Small Leak Detected. Code PP455: Large Leak Detected. An evaporative emissions system large leak or no purge flow could be caused by all of the following EXCEPT: Group of answer choices a loose or missing crankcase oil filler cap a vapor management valve failed closed a canister vent failed in the open position a loose or missing fuel tank filler cap Causes. Possible causes of OBD code P0441 Toyota. A code P0441 Toyota could mean one or more of the following has happened: Bad vacuum switch Broken or damaged EVAP line or canister Open in PCM purge command circuit Open or short in Voltage feed circuit to Purge Solenoid Faulty purge solenoid Restriction in EVAP solenoid, line or canister ...Evaporative Emission System Incorrect Purge Flow Actuator Stuck On. Leak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure is measured at start and at end of leak check. If stabilized pressure higher than [second reference pressure x 0.2], ECM determines that purge VSV stuck open.The EVAP system is performing its task of controlling fuel vapors whether the vehicle is idling, driving, or parked. In the rest state, not leak testing or purging the vapors into the engine, the EVAP system is able to breathe filtered air through the charcoal canister and ultimately the vent solenoid. The exchange in and out of the EVAP system ...EVAP System Purge Flow Performance During Boost: No Sub Type Information: Sets when the PCM detects the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (single path check valve), or when the fuel tank vacuum is less than a calibrated amount within a specified amount of time or when the …Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a Chrysler Pacifica. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system's purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, they all ...Symptoms. - Engine Light ON (or Service Engine Soon Warning Light) P1447 Citroen Description. In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control ...Definition Meaning Causes Fixes for a Hyundai P0441 Diagnostic Trouble Code: Evaporative Emission System Incorrect Purge FlowCauses of a Hyundai P0441 Code:B...P0441 - OBD II Trouble Code. See the above link resulting from the Google machine. I had rough running and stalling that eventually led to replacement of the evap canister purge valve -- it sucks vapor from the gas tank in order to keep it from venting into the atmosphere. It was stuck open causing rich mixture which O2 sensor feedback called ... Evaporative emission system purge flow performance during boost, The P0443 trouble code is caused when the vehicle's computer detects an issue with the purge control valve circuit on the EVAP system. Several factors in your vehicle's Evaporative Emission System (EVAP) can cause the P0443 code. Some of them are: A defective purge control valve. The wires on the control valve for the purge are damaged., P0441 Definition: EVAP System - Incorrect Purge Flow Here's the definition of P0441 for the Chrysler 200. It's a generic diagnostic trouble code, which means regardless of what auto manufacturer built the vehicle, it'll have the same meaning. It indicates that there is an issue with the Evaporative Emissions System. It'll often appear with, Many modern vehicles are equipped with an evaporative emission system (EVAP). The function of this system is to trap and purge smog-forming fuel vapors to prevent them from polluting the atmosphere. The powertrain control module (PCM) is usually altered once there’s a fault or leak within this system. P043e is one of the trouble codes …, All of the following can increase the pressure in the evaporative emission control system except _____. fuel temperature ... Inadequate purge flow rate triggers which DTC? a. P0440 b. P0446 c. P0300 d. P0440 or P0446. ... Evaporative emission control systems operate on low pressure measured in inches of water (in. H2O). ..., Once the depressurization is complete, the EVAP canister purge volume control solenoid valve is closed. If the pressure does not increase during this process, it indicates a leak in the system, triggering the P1441 fault code. It is important to address this issue promptly to ensure the proper functioning of your vehicle's emission control ..., A P0496 code implies that there’s an unacceptable amount of intake vacuum flow into the evaporative emissions system. Some of the causes of this problem are: a faulty purge or vent solenoid, defective fuel pressure sensor, incorrect electrical connections and faulty vent solenoid. Though this trouble code doesn’t cause any major problems ..., Technician A says the EVAP monitor for an OBD-II system determines whether there is a sufficient purge flow by varying the purge solenoid duty cycle will monitor the change in the STFT. Technician B says the canister bent solenoid must be open during EVAP pressure test in portion of the monitor., if there is positive pressure it is ON (should have continuity) it sends a signal to the ECM to energize the purge control solenoid. the ECM will then energize if other pre-determined conditions are met which we have no control over. if there is negative pressure it is OFF (no continuity) the ECM detects no signal from the pressure switch. this ..., P144C - EVAP System Purge Flow Performance During Boost. Description: The EVAP check valve test is performed during minimal boost conditions, once per drive cycle, when entry conditions are met. This DTC sets when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (single path check valve), or ..., Oct 11, 2023 · Bronco Sport. Oct 11, 2023. Thread starter. #1. I happened to get a check engine light on the same day the dealership was coming out to take care of the drain tube recall with their mobile service. Code was P0496 "Evaporative Emission System High Purge Flow". The tech was able to diagnose it while taking care of the recall and get the part ordered. , The EVAP purge valve is used to control the purge flow from the EVAP canister during engine running conditions. ... used on turbocharged engines to create a vacuum in the EVAP purge line from the EVAP purge valve to the intake air system. During boost conditions, boost pressure flows through a venturi inside the EVAP ejector creating a vacuum ..., Diagnostic trouble code (DTC) P0452 stands for "Evaporative Control System Pressure Sensor Low Input.". This code is set by the car's primary computer (often referred to as the powertrain control module or PCM) when the EVAP sensor detects changes in pressure that are below specification. The PCM will trigger a P0452 when the sensor ..., P0441 is one of the more common OBD II codes that can occur in the Hyundai Veloster . It is frequently caused by a loose or bad gas cap, cracked or disconnected EVAP system hoses, vacuum leaks, or a bad purge valve. Always start by taking a look at the gas cap. P0441 is related to the evaporative emissions control system (EVAP) and should not ..., P0441 BMW Description. The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions: - Large and small leaks. - Excess vacuum. - Purge flow during non-commanded conditions. - Fuel Level and Fuel Pressure sensor faults. - EVAP Purge and Vent Valve faults. The ECM monitors the Fuel Tank ..., P0441 Dodge Description. The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions: - Large and small leaks. - Excess vacuum. - Purge flow during non-commanded conditions. - Fuel Level and Fuel Pressure sensor faults. - EVAP Purge and Vent Valve faults. The ECM monitors the Fuel Tank ..., The Evaporative Emission System (EVAP) has been the cause of many check engine lights for years. From failed components to small leaks, the EVAP system can be difficult to diagnose. In the article, we will discuss the possible failures of the EVAP system and what you can do about it. ... P0441 - EVAP System Incorrect Purge Flow or Flow During ..., Driving conditions can be one of the factors responsible for increased pressure inside the fuel system. Two technicians were discussing evaporative control (EVAP) system operation. Technician A stated that activated charcoal is an effective vapor trap because of its great surface area. Technician B stated that the system purges the vapor ..., mains at the set flow, then apply the smoke to the system. In some cases, the EVAP EMISSIONS DIAGNOSTICS BY THE NUMBERS Once the hand vacuum pump is connected to the purge line, slowly pump it, ap-plying only the normal vacuum that the on-board system uses to test the sys-tem. The vacuum applied on the gauge in this test is holding slightly ..., P144C is an increasingly common code on turbo-charged vehicles. Here are the most common causes of P144C in the Escape: Bad EVAP check valve. Bad EVAP Ejector. EVAP check valve stuck open or closed. Blocked EVAP connection at the intake air system. Check out the video below. If P144C is intermittent, it can be challenging to chase down., Apr 29, 2011 · Check engine light came on in the Girlfriends 2007 Outlook. Code P0496, " Evaporative emission system high purge flow" As best as I could search this forum and Google, I am going to replace the Purge solenoid. Problem is I do not know where to look on the car for this part.. Somehow NAPA had 1 in stock, so I plan to fix it this weekend. , When it comes to sustainable livestock production and agriculture, measurement is the first — and sometimes most elusive — step in the process of turning our food system from a car..., Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a Chevy S10. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system's purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, they all point ..., 2018 Ford Escape OBD2 Code P0496 EVAP Flow During A Non-Purge Condition. Top Cars; ... (evaporative emission) Flow During A Non-Purge Condition, a problem usually caused by faults in the wiring, EVAP valve, or a mechanical issue. ... P2263 Turbo/Supercharger Boost System Performance; P2270 O2 Sensor Signal …, There's a purge solenoid on the engine near the throttle body. Since you're trying to fix the car by swapping parts, rather than understand and diagnose the system, I'd start there. No it's not a system that technically needs to be fixed immediately. The evap system stores and burns fuel vapor rather than just releasing it out into the ..., P0441 Definition: EVAP System - Incorrect Purge Flow Here's the definition of P0441 for the Volkswagen Golf. It's a generic diagnostic trouble code, which means regardless of what auto manufacturer built the vehicle, it'll have the same meaning. It indicates that there is an issue with the Evaporative Emissions System. It'll often appear with, The ECM has detected pressure in the EVAP system during a non-purge condition. P0496 Volkswagen Description. The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Fuel tank vapors are allowed to move from the fuel tank, due to pressure in the tank, through the vapor pipe, into the EVAP canister., P144C is an increasingly common code on turbo-charged vehicles. Here are the most common causes of P144C in the Escape: Bad EVAP check valve. Bad EVAP Ejector. EVAP check valve stuck open or closed. Blocked EVAP connection at the intake air system. Check out the video below. If P144C is intermittent, it can be challenging to chase down., The P0451 code is defined as Evaporative Emission Control System Pressure Sensor/Switch Range/Performance. See also P0441 Code: Evaporative Emission Control System Incorrect Purge Flow This diagnostic trouble code is set by the PCM when it detects that the Evaporative Pressure Sensor (also known as a Fuel Tank Pressure Sensor) indicates ..., In any case, the purge valve should be covered under the emissions warranty from Chevy. It's specified under the Evaporative Emission Control System's covered parts list. There are two main Chevy emissions warranties to know: 1.) Federal and 2.) California., This code only appears on vehicles that have a purge flow sensor or a leak detection pump. Early OBD2 Ford Rangers with non-enhanced EVAP systems simply had a small thermistor in the purge flow line that reported purge flow. Toyotas and Dodge vehicles with Leak Detection Pumps (LDP) measure system pressure changes to determine purge flow valve ..., Dec 19, 2023 · Code P0441 relates to the Evaporative (EVAP) emission control system. The code indicates a problem with the amount of fuel vapor that the EVAP charcoal canister purges into the engine. The EVAP system controls fuel vapor emissions to limit the amount that enters the atmosphere. In most EVAP systems, a ventilation line from the fuel tank ... , Dorman Products - 911-129 : Evaporative Emissions Purge Flow Sensor. This evaporative emissions system purge flow sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance., This code only appears on vehicles that have a purge flow sensor or a leak detection pump. Early OBD2 Ford Rangers with non-enhanced EVAP systems simply had a small thermistor in the purge flow line that reported purge flow. Toyotas and Dodge vehicles with Leak Detection Pumps (LDP) measure system pressure changes to determine purge flow valve ...