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Home›Trouble codes›P20EE› Ram
Diagnostic trouble code · Ram

P20EE on Ram vehicles The selective catalytic reduction catalyst is not reducing NOx to standard

P20EE is named on 9 Ram model years (2016–2026): 20 manufacturer filings and 2 owner reports in NHTSA’s files, across 2500, 3500, 1500, ProMaster.

Powertrain 9 model years 20 manufacturer filings 2 owner reports

Which Ram model years name P20EE

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2016 Ram 2500Power Train5—
2016 Ram 3500Power Train5—
2019 Ram 2500Service Brakes3—
2019 Ram 3500Engine3—
2016 Ram 1500Engine—2
2026 Ram 2500Electrical System1—
2017 Ram 2500Power Train1—
2017 Ram 3500Power Train1—
2016 Ram ProMasterNot specified1—

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Power Train 8 Electrical System 4 Fuel/Propulsion System 3 Service Brakes 2
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What Ram owners said

Source: NHTSA complaint database

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

2016 ecodiesel has a malfunctioning EGR cooler and leaks coolant into the exhaust system thus causing several issues: CEL code P20EE, loss of coolant at a rate of 2 gallons per week, DPF issue & DEF injector issues
2016 Ram 1500 at 48,800 miles Nov 22, 2019 NHTSA owner report

Ram filings that name P20EE

Source: NHTSA manufacturer communications

Bulletins and campaigns Ram filed with NHTSA whose summary names P20EE. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P20EE means

Source: SAE J2012 / OBD-II

The selective catalytic reduction catalyst is not reducing NOx to standard.

A stored code names the test that failed, never the part that caused it. The record above is what Ram and its owners have filed about it; the code’s page across every make has the whole file.

From here
Get a model's new bulletins by email See what owners reported Look up a bulletin by its number Watch a VIN for new recalls

Common questions

Source: NHTSA files and the OBD-II standard

Is P20EE a known problem on Ram vehicles?

It is a documented one: NHTSA's files hold 20 manufacturer filings and 2 owner reports naming P20EE on 9 Ram model years (2016–2026). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.

Which Ram models does P20EE appear on most?

2016 2500 (5 documents), 2016 3500 (5 documents), 2019 2500 (3 documents).

Does P20EE on a Ram mean it is recalled?

No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.

Where to go next

pages beside this code
Filed alongside P2002 Another code that appears in the same filings and owner reports as P20EE.Filed alongside P2459 Another code that appears in the same filings and owner reports as P20EE.Vehicle 2016 Ram 2500 The model year P20EE is filed against most often.The data Trouble codes by API GET /v1/dtc joins every code to bulletins and owner reports — free tier, no card.