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HomeTrouble codesP20E8
Diagnostic trouble code

P20E8

1 owner report and 170 manufacturer filings across 43 model years from Cadillac, Chevrolet, GMC, Jeep and others.

PowertrainGeneric OBD-II code170 manufacturer filings1 owner report

Where P20E8 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2018 Jeep Grand CherokeeEngine And Engine Cooling91
2017 Jeep Grand CherokeeEngine And Engine Cooling9
2020 Ram 1500Fuel System, Gasoline9
2019 Ram 1500Engine And Engine Cooling9
2018 Ram 1500Fuel System, Gasoline9
2017 Ram 1500Engine And Engine Cooling9
2021 Jeep WranglerExterior Lighting8
2020 Jeep WranglerEngine And Engine Cooling8
2021 Cadillac EscaladeEngine And Engine Cooling6
2023 GMC YukonEngine And Engine Cooling6
2021 Jeep GladiatorElectrical System6
2019 Jeep Grand CherokeeFuel System, Gasoline6
2021 Ram 1500Power Train6
2023 Cadillac EscaladeElectrical System4
2024 Chevrolet SuburbanEngine And Engine Cooling4
2023 Chevrolet SuburbanEngine And Engine Cooling4
2024 GMC YukonEngine And Engine Cooling4
2026 Ram 2500Electrical System3
2025 Ram 2500Electrical System3
2026 Ram 3500Electrical System3
2025 Ram 3500Electrical System3
2024 Cadillac EscaladeEngine And Engine Cooling2
2024 Chevrolet Silverado 2500HDElectrical System2
2023 Chevrolet Silverado 2500HDEngine And Engine Cooling2
2022 Chevrolet Silverado 2500HDElectrical System2
2021 Chevrolet Silverado 2500HDEngine And Engine Cooling2
2024 Chevrolet Silverado 3500HDElectrical System2
2023 Chevrolet Silverado 3500HDElectrical System2
2022 Chevrolet Silverado 3500HDElectrical System2
2021 Chevrolet Silverado 3500HDElectrical System2
2024 Chevrolet TahoeElectrical System2
2023 Chevrolet TahoeEngine And Engine Cooling2
2023 GMC SierraElectrical System2
2024 GMC Sierra 2500HDElectrical System2
2023 GMC Sierra 2500HDEngine And Engine Cooling2
2022 GMC Sierra 2500HDElectrical System2
2021 GMC Sierra 2500HDEngine And Engine Cooling2
2024 GMC Sierra 3500HDElectrical System2
2023 GMC Sierra 3500HDEngine And Engine Cooling2
2022 GMC Sierra 3500HDEngine And Engine Cooling2
2021 GMC Sierra 3500HDElectrical System2
2020 Jeep GladiatorEngine And Engine Cooling1
2026 Ram 1500Electrical System1

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

What it gets filed under

Engine And Engine Cooling 65Electrical System 35Fuel System, Gasoline 14Exterior Lighting 12Service Brakes 6Service Brakes, Hydraulic 4
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What owners said

Source: NHTSA complaint database

Owners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.

We live in galveston county so when it turned on we took it to autozone for the free code check - the code read was P20E8 and it just said emissions code
2018 Jeep Grand Cherokeeat 1,692 milesOct 7, 2018NHTSA owner report

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P20E8. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What P20E8 means

Source: SAE J2012 / OBD-II

P20E8 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.

A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.

Common questions about P20E8

Source: NHTSA files and the OBD-II standard

Can I keep driving with P20E8 stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.

Does a code mean the car is recalled?

No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.

Why do the counts here differ from other sites?

Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.

Will clearing the code fix it?

Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.