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Federal filingsHome›Trouble codes› P1DD2
Diagnostic trouble code

P1DD2

7 owner reports and 12 manufacturer filings across 6 model years from Chrysler, Jeep.

Powertrain Manufacturer-specific 12 manufacturer filings 7 owner reports

Where P1DD2 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2018 Jeep CompassPower Train55
2017 Jeep RenegadeElectrical System5—Battery →
2018 Chrysler 300Service Brakes—1Brake pads →
2020 Jeep CompassElectrical System1—Battery →
2019 Jeep CompassPower Train1—
2018 Jeep RenegadePower Train—1

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.

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P1DD2 by make

The same record, one make at a time: the model years, bulletins and owner reports that name P1DD2 on that maker’s vehicles.

Jeep 5

What it gets filed under

Electrical System 8 Power Train 6 Service Brakes 2 Exterior Lighting 1 Back Over Prevention 1

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.

Outragious oil consumption, car shuts down or slows down significantly while driving, check engine light came on and now reads code P1DD2, ive only had this vehicle for 1.5 yrs
2018 Jeep Compass Sep 19, 2022 NHTSA owner report
OBD code was U0402 (implausible data received from TCM) and (P1DD2 torque request signal from TCM denied)
2018 Jeep Renegade at 7,000 miles Jan 7, 2020 NHTSA owner report
Lastly, vehicle threw 3 codes for transmission sensors as well as EGR (U0402, u0402pd, and P1DD2) while casually driving
2018 Chrysler 300 at 24,000 miles Apr 26, 2019 NHTSA owner report

12 manufacturer filings name P1DD2. Start with what the maker wrote down.

A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.

Read the filingsSearch every bulletin →
Photo: Compagnons / Unsplash

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P1DD2.

What P1DD2 means

Source: SAE J2012 / OBD-II

P1DD2 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.

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.

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 about P1DD2

Source: NHTSA files and the OBD-II standard

Why does this page not define P1DD2?

Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.

Can I keep driving with P1DD2 stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. 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.

Where to go next

pages beside this code
Filed alongside P0513 Another code that appears in the same filings and owner reports as P1DD2.Filed alongside P0740 Another code that appears in the same filings and owner reports as P1DD2.Vehicle 2018 Jeep Compass The model year P1DD2 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.