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P1DF3 Powertrain · manufacturer code

P1DF3 fault code: what 11 owners reported

P1DF3 is a manufacturer-specific powertrain code (engine, transmission, fuel and emissions), so its exact definition belongs to the carmaker and is not in the generic OBD-II list. What it meant in practice is below, from 11 complaints owners filed with NHTSA. Updated November 9, 2026.

  • 11owner reports
  • 2car models
  • 0mention a crash
  • 0mention a fire
  • 2015–2019model years

Which cars get code P1DF3?

Every model whose owners mentioned P1DF3 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.

Where does P1DF3 show up?

By brand

  • Ram10
  • Chrysler1

Component the owner filed it under

  1. Electrical System8 (72.7%)
  2. Power Train4 (36.4%)
  3. Engine3 (27.3%)
  4. Fuel System1 (9.1%)
  5. Gasoline1 (9.1%)

Is there a recall for P1DF3?

The others concern the component owners file this code under (Electrical System) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.

Electrical System: Instrument Cluster/Panel Chrysler (FCA US LLC) is recalling certain 2019 Ram 1500 vehicles. The instrument cluster may not properly illuminate driver warnings. As such, these vehicles fails to conform with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays." NHTSA campaign 19V556000 · July 26, 2019 · Affected cars

2019 Ram 1500. Full risk and remedy on each car's report.

Electrical System: 12v/24v/48v Battery Chrysler (FCA US LLC) is recalling certain 2019 Ram 1500 vehicles equipped with a 48v auxiliary battery system located behind the rear seat (sales code: XBZ). Due to an incorrect assembly repair process, the auxiliary battery wire terminal connection may overheat. NHTSA campaign 19V142000 · February 28, 2019 · Affected cars

2019 Ram 1500. Full risk and remedy on each car's report.

Electrical System: Wiring: Front Underhood Chrysler (FCA US LLC) is recalling certain 2018 Jeep Renegade, Compass and Grand Cherokee, RAM 1500 and Promaster, Fiat 500x, Dodge Journey, Challenger, Charger and Durango and Chrysler 300x vehicles, 2017-2018 Jeep Wrangler, Dodge Grand Caravan and Chrysler Town and Country vehicles and 2018-2019… NHTSA campaign 18V524000 · August 9, 2018 · Affected cars

2018 Ram 1500. Full risk and remedy on each car's report.

Electrical System: Wiring Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler… NHTSA campaign 18V332000 · May 17, 2018 · Affected cars

2019 Ram 1500, 2018 Ram 1500, 2017 Ram 1500, 2016 Ram 1500, 2015 Ram 1500, 2017 Chrysler 300. Full risk and remedy on each car's report.

Electrical System: 12v/24v/48v Battery: Cables Chrysler (FCA US LLC) is recalling certain model year 2014-2015 Ram 1500 diesel 4x2 trucks manufactured August 8, 2013, to July 2, 2015. The affected vehicles have a battery harness that may rub against the frame bracket for the right engine mount resulting in an electrical short. NHTSA campaign 15V517000 · August 14, 2015 · Affected cars

2015 Ram 1500. Full risk and remedy on each car's report.

What happened when owners saw P1DF3?

10 of the 11 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.

Went to start my truck and it wouldnt start. Connected a jumper box to it to start it and started right up. Check engine light came on and showed "Code P1DF3". My safety was at risk due to not being able to get back home due to this issue. This fault has been reported by others with the ram 1500.
2016 Ram 1500Power Train, Electrical SystemNHTSA complaint 11703357 · Dec 5, 2025
JUMPED A VEHICLE AT AROUND 110000 MILES ECM MODULE DRAINING BATTERY ACCORDING TO DEALER CODE P1DF3. KNOWN PROBLEM AMONG MULTIPLE CHRYSLER DODGE JEEP PRODUCTS WHEN I DID A QUICK WEB SEARCH. ECM FAULTY REQUIRES FULL DISCHARGE WITH BATTERY CABLES REMOVED. DID NOT WORK FOR ME HAD TO GO TO DEALERSHIP TO GET THEM TO FLASH AND RESET IF I DID NOT HAVE A WARRANTY THEY WOULD HAVE CHARGED ME.
2017 Chrysler 300Electrical SystemNHTSA complaint 11348835 · Aug 12, 2020
In the Dashboard show the Check engine light, so when I check on computer show Code P1DF3, it kill my battery many times.
2015 Ram 1500Electrical SystemNHTSA complaint 11553387 · Nov 3, 2023
Vehicle after driving and shutting off, fails to start. Only having an audible click noise. Truck required to be towed to home. Battery provided sufficient voltage and shows to have continuity from starter relay to solenoid. Disconnected the negative battery connector overnight. After sitting unplugged from battery overnight and reconnecting in morning, the truck started 1st attempt, however now has several codes popping up P1DF3, P2111, P2017 and U0402. (There were no prior issues: as truck would start and drive with no delay and no service engine lights.) After the 3rd attempt to start the truck after previously having the negative cable disconnected, it failed to start and would only have…
2019 Ram 1500Power Train, Electrical SystemNHTSA complaint 11538267 · Aug 13, 2023
Battery went dead, display showed power steering failure and the check engine light was on. I had the code read and it was P1DF3
2019 Ram 1500Power TrainNHTSA complaint 11443801 · Dec 14, 2021
AFTER SITTING OVERNIGHT, THE TRUCK WOULDN'T START. AFTER CHARGING 12 HOURS IT STARTS BUT WILL NOT RESTART AFTER SHUTTING DOWN. OBD P1DF3 CODE. RESEARCH SHOWS MANY OF THE SAME COMPLAINT. JUST PURCHASED 6 MONTHS AGO.
2017 Ram 1500Electrical SystemNHTSA complaint 11390872 · Jan 31, 2021
VEHICLE FAILS TO START WITHOUT ANY NOTICE OR APPARENT INDICATIONS OF A POTENTIAL ISSUE.I HAD SOMEONE USE A CODE READER AND GOT THE FOLLOWING CODE P1DF3... I CHECKED RAM FORUMS AND THIS IS A COMMON MALFUNCTION. WITHOUT WARNING SOMETHING DRAINS THE BATTERY. NO ONE KNOWS WHAT WILL FIX IT YET.
2019 Ram 1500Power Train, Electrical System, EngineNHTSA complaint 11355221 · Sep 15, 2020
EHICLE WAS PARKED OVER NIGHT CAME OUT NEXT DAY TO GO TO STORE EBGINE LIGHT WAS ON ON FURTHER INVESTIGATION I GET A P1DF3 ERROR CODE FROM MY ODB READER
2019 Ram 1500EngineNHTSA complaint 11354748 · Sep 13, 2020
WITHOUT WARNING OR APPARENT CAUSE, REMOTE START RESULTED IN 'CLICK' SOUND. ATTEMPTED TO START WITH PUSH BUTTON AND DID NOT TURNOVER. RECEIVED JUMP. AFTER PARKING AND RETURNING, ISSUE RESUMED. DISCOVERED NECESSITY TO KEEP PUSHING START BUTTON UNTIL VERY, VERY ROUGH AND RESISTANT TURNOVER INITIATED. ONCE ENGINE IS ON, NO ISSUES (OTHER THAN BLANK 'FUEL ECONOMY' AND 'VEHICLE INFO' SCREENS.) CHECK ENGINE LIGHT ILLUMINATED. PROBLEM PERSISTS, ACCESSORIES OPERATIONAL. ODB 2 CODE: P1DF3
2018 Ram 1500Electrical System, EngineNHTSA complaint 11350177 · Aug 19, 2020
The contact owns 2019 Ram 1500. The contact stated that on numerous occasions while refueling the vehicle, the fuel overflowed from the filler neck. The contact then stated that water had leaked into the fuel tank. The check engine warning light illuminated. A message displayed on the instrument panel “catastrophic failure to the vehicle if failed to stop”. The vehicle was inspected by an independent mechanic using an OBD code reader and retrieved codes: P0300, P0456, P0455 and P1DF3 and diagnosed that the fuel pump failed and needed to be replaced. The vehicle was repaired. An undisclosed dealer was notified of the failure and the contact was informed that the vehicle was not covered under…
2019 Ram 1500Fuel System, GasolineNHTSA complaint 11548620 · Oct 6, 2023

P1DF3: questions drivers ask

What does code P1DF3 mean?

P1DF3 is a manufacturer-specific powertrain code (engine, transmission, fuel and emissions), so its exact definition depends on the carmaker and is not in the generic OBD-II list. 11 owners reported it to NHTSA, most often for the Ram 1500 (10), Chrysler 300 (1); their reports describe what happened.

Which cars get code P1DF3 most often?

In NHTSA owner complaints, P1DF3 is mentioned most for the Ram 1500 (10), Chrysler 300 (1), across 2 models and model years 2015 to 2019. Popular models collect more reports because more of them are on the road.

Is there a recall for code P1DF3?

No NHTSA recall text names P1DF3 directly. 5 recalls on the cars that report this code concern the same component owners name most (Electrical System); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.

What should I do if my car shows P1DF3?

Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.

How this page was made

CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P1DF3. Manufacturer codes have no public standard definition, so CarHooq shows only what owners reported. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.

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