P0420 code dodge journey

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So I got the P code. I have a 2. I've replaced both O2 sensors, new plugs, filter, cleaned the throttle body and almost every sensor in the car. Any ideas before I spend the money for a new cat? What kind of driving do you do and what other CEL codes have you had in the recent past with the J? If a lot of short drives are done , put a good dose of Seafoam fuel system cleaner in the fuel tank and DRIVE highway speeds for the tank over the course of a week and see what it does. The 2.

P0420 code dodge journey

OBD Code P is an extremely common indicator of an issue with the operating efficiency of your Dodge Journey's catalytic converter, so it's letting you know by flipping on the check engine light hopefully before you fail an emissions test. This code basically means that the engine's O2 sensors associated with your Dodge Journey's Catalytic Converter have informed the electronic control unit ECU that the catalytic converter isn't doing its job well enough or perhaps at all. If the catalytic converter isn't working like it should, your engine will let off more pollution than is legal — a P code almost assuredly means that you'll fail an annual emissions test, so you don't have much choice but to get this fixed if you want to drive legally. Note: If your vehicle has a dual exhaust system, this code will indicate that the issue is with the first engine bank, i. On dual-exhaust vehicles, you might see code PO instead, representing the second bank. On most vehicles, however — this code indicates a problem with either or both bank s. At this point, the front sensor should be registering varying levels of O2 in the exhaust while the back sensor should be reading fairly stable levels, because the converter "normalizes" the exhaust as it flows through the catalyst. You may experience a very slight reduction in engine power from reduced exhaust flow, as well. There's also the possiblity that you failed an solenoid-style emissions test from excess pollutants in the tailpipe or failed an OBD-based emissions test. Regardless, you need to get this one fixed, especially if your annual smog check deadline is coming up or is here. This is a potentially costly repair — catalytic converters contain valuable metals like platinum, which means that the part itself is expensive — as much as thousands of dollars depending on your vehicle. What's more, the labor involved can run into the four figures too. Replacing a catalytic converter can be difficult, especially on more recent models that have tried to make them harder to steal. This code isn't particularly dangerous to drive with for a little while — we'd just strongly recommend that you reset the check engine light with an OBD scanner so if another mor urgent issue crops up, you'll know about it.

As always, we strive for accuracy, but do p0420 code dodge journey own research — we're not responsible for how you use the information here. I've replaced both O2 sensors, new plugs, filter, cleaned the throttle body and almost every sensor in the car.

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P is a well-recognized error code within the automotive industry, notorious for its persistence. Luckily, this article is designed to guide you through understanding the implications of this error code, exploring its possible causes, and navigating potential fixes. Drawing on our experience, we acknowledge that resolving P can be challenging without appropriate knowledge. This complexity arises as the error can take a significant amount of time to reappear, even after parts replacement and code resetting. Throughout this blog post, we will address these issues and more, providing you with comprehensive insight into the P code. 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 the catalytic converter to measure its efficiency.

P0420 code dodge journey

This page is meant to help you troubleshoot the Dodge Journey P trouble code. A failing oxygen sensor or bad catalytic converter are the most common causes of P Catalyst system efficiency is the percentage of these chemicals removed from the exhaust system.

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Miles: Miles. If a lot of short drives are done , put a good dose of Seafoam fuel system cleaner in the fuel tank and DRIVE highway speeds for the tank over the course of a week and see what it does. The downstream O2 sensor voltage should not switch as fast. It won't fix your issue, of course, but it'll temporarily "mute" them. Reply to this topic Help Us Help You Please comment below describing your issue as well as the specifics of your vehicle make, model, year, miles, and engine. This is a potentially costly repair — catalytic converters contain valuable metals like platinum, which means that the part itself is expensive — as much as thousands of dollars depending on your vehicle. Regardless, you need to get this one fixed, especially if your annual smog check deadline is coming up or is here. At this point, the front sensor should be registering varying levels of O2 in the exhaust while the back sensor should be reading fairly stable levels, because the converter "normalizes" the exhaust as it flows through the catalyst. Always remember, check the engine for any type of misfire, as this will lead to premature catalytic converter failure. When the engine is started cold, both O2 sensors should produce the same voltage. Notify of. Share More sharing options

OBD Code P is an extremely common indicator of an issue with the operating efficiency of your Dodge Journey's catalytic converter, so it's letting you know by flipping on the check engine light hopefully before you fail an emissions test.

Also inspect the exhaust system for any cracks or openings between the upstream and downstream O2 sensors, They can throw some pretty weird codes if air can get in before the downstream sensor. It's worth mentioning there's a few states that abide by CARB an emissions regulation — this won't get you past an emissions test in those states, so tread carefully. Display as a link instead. Note: If your vehicle has a dual exhaust system, this code will indicate that the issue is with the first engine bank, i. You may experience a very slight reduction in engine power from reduced exhaust flow, as well. Go to topic listing. Inline Feedbacks. This is a potentially costly repair — catalytic converters contain valuable metals like platinum, which means that the part itself is expensive — as much as thousands of dollars depending on your vehicle. Catalytic converters contain expensive rare-earth metals that make them expensive to produce. As always, we strive for accuracy, but do your own research — we're not responsible for how you use the information here.