P0430 jeep code

John Hege. Automotive Mechanic. 40 years of experience. A P0430 code indicates the catalyst efficiency has fallen off. If there are no other codes indicating misfires and if the check engine light is not blinking, you should be OK to drive your car. If you have trouble scheduling a convenient repair, you can call YourMechanic to have a mechanic ...

P0430 jeep code. Code Number Code Description Related Codes P0430 Catalyst System Efficiency Below Threshold (Bank 2) P0420 - Catalyst System Efficiency Below Threshold (Bank 1)

The bank 2 version of this code is P0430. ... The P0420 code in a Jeep Grand Cherokee will often be thrown if one of your vehicle's oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on. ...

One of the most common causes of the P0430 code is a failed catalytic converter. If the catalytic converter is not able to convert the exhaust gases properly, it will cause an increase in emissions and a decrease in engine performance. This can lead to the P0430 code being triggered.Another cause of the P0430 code is a malfunctioning oxygen sensor.This page is meant to help you troubleshoot the Jeep Cherokee P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. ... The bank 2 version of this code is P0430.This page is meant to help you troubleshoot the Jeep Commander P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsHere's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. May or m...JSCAN came up P0430 code . Intially I was confused as to how to fig. out if catalytic converter or other issue . can cause a P0430 code. C Converter. Using a infrared thermometer once engine heated up. Idle at 2K and. check temp of CC on the intake and outlet side of the converter.

According to Jeep Commander, the p0430 code means Catalyst System Efficiency Below Threshold. Best I can tell is that this has something to do with the catalytic converter, o2 sensor, or something with the exhaust like an exhaust leak. Best to take your Liberty to a mechanic. I have no clue what the code and the statement under it about the ...What Does the P0430 Code Mean? Code P0430 means that the downstream oxygen sensor from the catalytic converter on bank 2 detects the cat isn’t operating to efficiency standards, based on factory specifications. The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts...What is the Cost to Diagnose the Code? Labor: 1.0. The cost to diagnose the P0153 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.3 posts · Joined 2022. #1 · Apr 21, 2022. Hi everyone, my name is Donovan and I own a 2005 Jeep Grand Cherokee with a HEMI 5.7 engine. the two codes indicate this: P0420: Catalytic converter system, bank 1 - efficiency below threshold. P0430: Catalytic converter system, bank 2 - efficiency below threshold. From what I understand it comes from ...

Karachi (/ k ə ˈ r ɑː tʃ i /; Urdu: کراچی; Sindhi: ڪراچي ‎; IPA: [kəˈraːtʃi] ⓘ) is the capital city of the Pakistani province of Sindh.It is the largest city in Pakistan and the 12th largest in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast and formerly served as the capital of Pakistan.Check Engine Light and P0420 and P0430 Codes. So, your Check Engine light is on, and you’ve got either a P0420 or P0430 code, on your OBD-II scanner. This “Catalyst system efficiency below threshold” code is triggered when your car’s computer (the powertrain or engine control module (PCM or ECM)) detects a catalytic converter issue. 1A ...Jeep Commander P0420 Code Symptoms. The P0420 code in a Jeep Commander will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.So P0153 is "O2 Sensor 2/1 slow response. And P0430 is catalyst efficiency (bank 2). Its fairly obvious right off the back that the issue is with the passenger side exhaust (bank 2) in both codes. I have read that its probably either a bad O2 sensor (hence code P0153 which is saying that the first sensor on the passenger side bank 2 is …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts...Code P0300 is often related to bad spark plugs or spark plug wires but could be caused by a number of issues relating to ignition and the air-to-fuel ratio in the cylinders. When the air/fuel mixture in your cylinder (s) is not able to burn normally and the difference is severe enough, it may cause a misfiring cylinder problem in your vehicle ...

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Code Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be ...30809 posts · Joined 2002. #3 · Sep 6, 2011. Check your fluids and gear oil for water contamination. P0750 JEEP - Low Reverse Solenoid Circuit. Possible causes. - Low transmission fluid level. - Dirty transmission fluid. - Faulty Low Reverse solenoid valve. - Low Reverse solenoid valve harness or connectors.CoreyZ. 524 posts · Joined 2011. #2 · Jun 30, 2011. Those codes are due to your O2 sensors reading your exhaust out of its effeciency range. Either your cat it going bad, or your sensors are.... but its a minor issue. My last car I got that code non stop due to having the cat removed and using a straight pipe, didnt make the car run any worse ...Engine codes - P0420 and P0430. Jump to Latest Follow ... 05 5.7 Maggie, 06 5.7 Jeep GCO modded the same, MDS ON lights, advanced FRI Sidewinder cams, 6.1 valve trains, 25% UD pulleys, BT catch cans, ported/polished/milled heads, 90mm TB's, long tube headers, SRT8 CAI's, SOS coils, Transgo Shift Kits, SC, DS and HP Tuners, Maggie has Getrag 3. ...

The P2098 trouble code stands for "Post Catalyst Fuel Trim System Too Lean (Bank 2)," meaning the oxygen levels leaving the converter in the exhaust stream on the bank 2 side are too high. Causes for the P2098 code include a leaking exhaust system, a bad or failing upstream oxygen sensor, or a problem in the post-catalytic oxygen sensor ...Model Specific Jeep Discussions. Wrangler JK (Model years 2007-2018) JK Technical Discussion. P0420 Code 2007 3.8L JK. Jump to Latest Follow 8K ... Usually with a P0420 or P0430, the code generally means your cats are bad. It's one of the few codes that really does mean a part is bad.2008 Jeep Grand Cherokee 4.7 I have 2 codes p0430 and p0420 for both cats but it doesn't say if it's the upstream or - Answered by a verified Jeep Mechanic ... 2005 jeep libert3.7 p0430 cat efficiency below threshold bank 2 p2098 downstream fuel trim lean bank 2 changed bank 2 cat as well as bank 2 sensor 2, ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code JEEP P0401 Saving Repair...Dec 5, 2020 · P0430 code disappeared, but then up pops a P2098 code...system too lean possible exhaust leak. There is an exhaust leak paste (very cheap) available and it works well for sealing cracks long enough to pass inspection. Otherwise, will need to replace entire Catalytic assembly. Code Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to ...Or I guess worse if its caused engine damage. Jeep issued an extension in the manufacturer warranty to 10yrs and 150k. Unfortunately for this vehicle that extension ran out in March. I'm just wondering if its worth the $210 to have it diagnosed. It runs fine. The Jeep is in excellent condition. Two owner vehcile.Find out what P0430 Jeep code means, how to diagnose and repair it, and what symptoms it may cause. Compare with other OBDII codes on AutoCodes.Check for exhaust leaks and correct as needed. Test the compression on each cylinder to rule out any possible internal engine issues. If none of that clears the codes, …12 days and 10 stages spanning 400km on jeep track, goat track...sometimes no track. IT SAYS SOMETHING about this race that none of the international riders who previously complete...2007 Jeep Grand Cherokee Limited 5.7L (p0430) Problem: MIL Lamp on (P0430) Diagnosing: Cats and oxygen sensors were replaced, but the check engine light stays on showing the same code.

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P0420 & P0430 codes - white smoke exhaust. I've been meaning to post about this for a few months now.. I bought this vehicle last summer and have put about 13k km on it. Shortly after I bought it the check engine light came on and it gave me codes P4020 & P4030 (catalytic converter is not performing as efficiently as it should be).This page is meant to help you troubleshoot the Jeep Cherokee P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsJeep Platform Discussion. WK- Grand Cherokee (2005-2010) P0430 Code and AirBag Light. Jump to Latest Follow 4K views 6 ...Code P0430 Lexus Description. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air-fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post …Or I guess worse if its caused engine damage. Jeep issued an extension in the manufacturer warranty to 10yrs and 150k. Unfortunately for this vehicle that extension ran out in March. I'm just wondering if its worth the $210 to have it diagnosed. It runs fine. The Jeep is in excellent condition. Two owner vehcile.I bought a 2007 Jeep Wrangler with 109k miles on Dec 31, 2019 from a small dealer. On Jan 1, 2020 the check engine light came on. The code is P0420 and P0430. I took it to a reputable Jeep mechanic and he said the catalytic converters had recently been replaced. He recommended I replace the O2 sensors with new factory ones, which I did.If you are seeing P0300, that's a random misfire. Usual causes are bad spark plugs or possibly a faulty Cam position sensor or crank position sensor. P0430 means that you have Catalyst System Low Efficiency Bank 2. This is specific to one catalytic converter. Taken together, you have a bad catalytic converter that is causing the misfire code ...Causes. A code P0420 may mean that one or more of the following has happened: •Leaded fuel was used where unleaded was called for. •An oxygen sensor is not reading (functioning) properly. •The engine coolant temperature sensor. is not working properly. •Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe.Model Specific Jeep Discussions. Wrangler JK (Model years 2007-2018) JK Technical Discussion ... OBD-II Trouble Code: P0430 Catalyst Efficiency Below Threshold (Bank 2) Note that Bank 1 is the passenger side, bank 2 is the driver side. Curious that both banks are throwing the same codes.

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P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) January 11, 2024. P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) When your vehicle starts misbehaving—belching smoke, losing power, or idling roughly—it's often a sign of trouble. And when the ...The P054A fault code is related to the Variable Camshaft Timing (VCT) position during cold start up. The Powertrain Control Module (PCM) monitors the camshaft timing to ensure it does not exceed a maximum calibrated value or remain in an advanced position. When the camshaft timing is over-advanced, the P054A code is triggered.If you’re planning a trip to explore the breathtaking beauty of the great outdoors, there’s no better way to do it than with Pink Jeep Tours. One of the easiest and most effective ...This page is meant to help you troubleshoot the Jeep Commander P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsJeep p0430 wrangler code installed cat system error above being Q&a: troubleshooting p0720 error code in 1999 jeep grand cherokee Image above : new cat system being ...January 11, 2019 by Jason. P0155 is a very common OBDII code that occurs in the Jeep Wrangler. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 2 sensor 1. The purpose of the heated element in the oxygen sensor is to quickly bring your O2 sensor up to normal operating temperature after the vehicle has ...This page is meant to help you troubleshoot the Jeep Patriot P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsThe BMW P0430 code indicates a problem with the catalytic converter conversion 2. Here are some potential fixes for this issue: Replace the catalytic converter: If the catalytic converter is damaged or worn out, it may need to be replaced. This is often the most effective solution for the P0430 code.This page is meant to help you troubleshoot the Toyota Tundra P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsOk, I just bought a 2007 Jeep Wrangler Unlimited Sahara and I am having a hard time with a check engine code of p0430. A little history, when I bought the jeep from a local dealership (a week ago) it had a check engine light for the EGR valve and the catalytic converter. (They told me they would fix anything it needed) They replaced the EGR valve, and that cleared the codeThe 420/430 are saying Catalytic converter system, efficiency below threshold for both sides. PCM judges this by what the 4 O2s are reporting. The S1s (front) as seen with a OBD-II scanner should bounce around at lot where. the S2s (after CATs) values are stable and less active.The Jeep Grand Cherokee is one of the most iconic vehicles on the road today. For decades, it has been a symbol of adventure and freedom, and now it’s getting an all-new makeover f... ….

I have a 2011 Jeep Wrangler. So for the past month I've have been battling the dang check engine light coming on even after a reset. Got the 0456 code and found out that it was the emission/ evap system "small leak." It was suggested I start with the gas cap. I replace the gas cap and Big surprise, it came back on after a few hundred miles.Jeep Mechanic: Ron. Bank to is the drive side on the engine on your 3.8 and the most common cause for the code P0430 to set on this engine is in most cases due to a failing Catalytic converter and in this case that would be the bank 2 converter. I would start with making sure there are no exhaust leaks as well as make sure the HO2S sensors are ...I changed the oil, oil filter, air filter, both diff's, transfer case and dropped the tranny pan and changed the tranny filter as well. Also changed the plugs and boots. Now I have gotten the P0430 code. I checked both cats with my handheld temp gauge. Drivers side in temp was roughly 316-320,out temp was 330-340ish.2007 Jeep Wrangler X unlimited Thank You, Kelly . Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. H. HOOCBB. ... Don't be scared of a trip to the dealer for the p0430 code if your under 8 years and 80,000 miles it will most likely be a free repair. The bad news is that if the p0430 code is the only code you had ...The P0430 code is a diagnostic trouble code that indicates a malfunction in the catalytic converter of your GMC Acadia. This code specifically refers to the Bank 2 catalytic converter, which is located on the passenger side of the vehicle. When this code appears, it means that the efficiency of the catalytic converter is below the acceptable ...Code P0430 after catalytic converter replaced. Dear All! Trying to resolve this issue for some time now I've got "Catalyst System Efficiency Below Threshold (Bank 2)" code and replaced after-cat O2 sensor as first troubleshooting step. Code came back. Catalytic converter got replaced later (aftermarket was used) - Code came back.An illuminated check engine light has brought a 2012 Chevrolet Traverse into the shop. In this video, Master Trainer Drew Jablonowski of Garage Gurus shows t...Codes p0430 p0420 p2096 p2098 2005 jeep liberty 3.7 4x4 72000mi - Answered by a verified Jeep Mechanic. We use cookies to give you the best possible experience on our website. ... Got a check engine light, code P0430, had mechanic change plugs,trim fuel and said ignition was goog.Went to Auto Zone, they ran their little cpu on it and returned the code P0430. From what I have gathered this could mean 1 of 2 things. 1. I need a new catalytic converter. I am at 7 years and 96k so I am screwed on the warranty. 2. Bad o2 Sensor (s). I guess my question is, should I try replacing all my o2 sensors before I take it into a shop ...I have a 2011 Jeep Wrangler. So for the past month I've have been battling the dang check engine light coming on even after a reset. Got the 0456 code and found out that it was the emission/ evap system "small leak." It was suggested I start with the gas cap. I replace the gas cap and Big surprise, it came back on after a few hundred miles. P0430 jeep code, The P0455 Jeep code occurs when the PCM detects a large EVAP leak. Symptoms include an illuminated CEL, subpar engine performance, stalling, and excessive exhaust smoke (among others). A malfunctioning gas cap or a defective emissions control system component can cause the fault code. However, the list does not end there., MeanGreenZJ. 1708 posts · Joined 2011. #9 · Feb 2, 2012. My guess is that the P0430 code is triggered by the P2098 code. Which points to a failed 02 sensor or circuit, exhaust leak or mechanical issues. Or as said above a flash update issue., Actualizar 90+ imagen 2007 jeep wrangler code p0430 P0430 code ford edge Jeep wrangler unlimited sahara jk suv red mid size rubicon crossover wranglers special reviews sized review sport mod., The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor. The engine control module (ECM) uses two O2 sensors, one in front, and one behind ..., This page is meant to help you troubleshoot the Toyota Tundra P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of Contents, The bank 2 version of this code is P0430. ... The P0420 code in a Jeep Patriot will often be thrown if one of your vehicle's oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on. ..., When a Jeep gets a P0430 code, it simply means that the catalytic converter is not able to function properly. The catalytic converter is one of the last components of an emission diagnostic system that all needs to work. How To Troubleshoot and Fix a Jeep P0430 Code ., Also 05 5.7 Magnum modded the same as Jeep and, Recently Sold, 06 300CSRT8, Comp. Cam, 85 mm TB, HP tuned engine/trans, Foose custom wheels. Replaced with 2021 Tesla Model S Plaid with 1020 hp and 1050 lb. ft. of torque, 9.30 at 148 mph quarter mile in Plaid Mode. the catalyst monitor uses the downstream oxygen sensor to determine how fast it ..., The cost to diagnose the P0430 2018 GMC Sierra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type., 6.Get a Replacement O2 Sensor That Fits Your Car. The P0157 code refers to a potential problem with the #2 sensor on Bank 2 or its circuit. This code applies to the downstream oxygen sensor located right behind the catalytic converter. If your OBD-II scanner registers this code, you can either let your mechanic handle it or address the issue ..., December 6, 2021 by Jason. P0846 is a relatively common trouble code. While your Jeep Wrangler's check engine light will come on, P0846 is a transmission-related trouble code, specifically the transmission fluid pressure sensor circuit. It's a generic code, so P0846 has the same definition for any vehicle made for the 1996 model year and up., Here's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. May or m..., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0430 Saving Repair Parts..., P0430 code!!! Jump to Latest Follow 21 - 24 of 24 Posts. 1 2. Wombler · Registered. Joined ... A forum community dedicated to Jeep Commander owners and enthusiasts. Come join the discussion about lift kits, modifications, reviews, purchasing, troubleshooting, maintenance, and more!, P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most common cause of P0420 is a ..., For More Info visit us at: http://1aau.to/h/cvP/Is your Check Engine Light on? The trouble code P0430 suggests there might be a problem with your catalytic c..., Does Cataclean really fix a P0420 / P0430 error code and catalytic converter. Cataclean Link: https://amzn.to/33t8RVQ Second channel for easy to follow Home ..., in this video I will share with you how to diagnose and fix the cause of a P0420 and P0430 Trouble Code on a Hyundai Sonata#Catalyticconverters #Catalyticcon..., Model Specific Jeep Discussions. Wrangler JK (Model years 2007-2018) JK General Discussion. P0430 code and engine knocking. Jump to Latest Follow 4K views 9 ..., P0430. had the Check Engine light on my 05 Grand Cherokee with the 4.7 V8 with 80k miles. Local trusted mechanic says all four O2 sensors are working and both catalysts generate at least 100 degrees via infrared thermometer. Tried to clean thinks up with SeaFoam and ChemTool products but the code would come back., My CEL came on in my '15 Wrangler this afternoon and those were the fault codes I pulled. The P0132 is an obvious one -- oxygen sensor -- but the P1128 is a little more troublesome, closed loop fueling not achieved. ... Greetings to you, I have a 2007 Jeep Liberty that dies in idle mode, and sometimes the fault code appears on the dashboard ..., P0430 Code and Injector Help. I have an 18 RIdgeline with 158K. Recently I got an emission system problem with a P0430 Code. I am familiar with the injector problems. I took it to Honda for diagnosis. I referenced the TSB with them: They performed the diagnosis. I go back up there, and the rep tells me the diagnosis is I need a new Catalytic ..., Tech Notes. As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be ..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., 08 Wrangler P0455 code. My 2008 wrangler is throwing out a P0455 evap leak code. Theres been for awhile, almost a knocking sound from octane levels which seemed to go away with an additive i put in. Knocking seemed to go away, by the end of the tank it was running well. About halfway through the next tank w/o adding more additive, …, Anyway, I cleared the codes again, started it up and it ran ok for a minute then as the idle came down and temps came up you could hear slight missing. check engine light came on, flashed a few times, then steady. Codes were P0300 and P0151 oxy sensor low voltage this time. I rev'd it a few times and idle smoothed out, missing stopped., Aluminum flywheel Aluminum drive shaft ECU flash tuner Cold air intake Large bore throttle body The 5.7 HEMI engine is available in the Dodge, Chrysler and Jeep vehicles, making it..., Also 05 5.7 Magnum modded the same as Jeep and, Recently Sold, 06 300CSRT8, Comp. Cam, 85 mm TB, HP tuned engine/trans, Foose custom wheels. Replaced with 2021 Tesla Model S Plaid with 1020 hp and 1050 lb. ft. of torque, 9.30 at 148 mph quarter mile in Plaid Mode. the catalyst monitor uses the downstream oxygen …, P0404 - Egr Position Sensor Rationality Open. P0405 - Egr Position Sensor Circuit Low. P0406 - Egr Position Sensor Circuit High. P0420 - Catalyst Efficiency (bank 1) P0430 - Catalyst Efficiency (bank 2) P0440 - General Evap System Failure. P0441 - Evap Purge System Performance., Filled my '12JKUR (80,000 miles) with ARCO gas, which is supposed to be Top Tier, and a few miles down the road, check engine light comes on; codes were P0430 (cat insufficiency) and P0158 sensor 2/2 (driver's side?). Took it into dealer and they said replace all 4 cat converters and all 4 sensors for $3600!, Model Specific Jeep Discussions. Wrangler JK (Model years 2007-2018) JK General Discussion. P0430 code and engine knocking. Jump to Latest Follow 4K views 9 ..., Stubborn P0456 and P0457 Codes. I'm kind of at the end of my rope here. Been chasing these codes for months now. I started with the obvious and replaced the gas cap with a new one from the dealer and it still came back. I replaced the purge solenoid and leak detection pump and still came back., The Jeep Grand Cherokee is one of the most iconic vehicles on the road today. For decades, it has been a symbol of adventure and freedom, and now it’s getting an all-new makeover f...