Fault Code Lookup › Powertrain codes › P0606
P0606 Powertrain · generic OBD-II
ECM/PCM Processor
P0606 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 24 complaints filed with NHTSA. Updated November 3, 2026.
Owners also write it as P060600 (the last two characters are the sub-code).
- 24owner reports
- 9car models
- 0mention a crash
- 0mention a fire
- 2012–2024model years
Which cars get code P0606?
Every model whose owners mentioned P0606 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.
Chevrolet Silverado
4 reportsChevrolet Silverado LD
4 reportsFord Focus
4 reportsChevrolet Traverse
1 reportDodge Grand Caravan
1 reportGMC Sierra
1 reportMercedes-Benz SL-Class
1 reportRam 1500
1 reportWhere does P0606 show up?
By brand
- Ford11
- Chevrolet9
- Dodge1
- GMC1
- Mercedes-Benz1
- Ram1
Component the owner filed it under
Is there a recall for P0606?
The others concern the component owners file this code under (Power Train) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.
Power Train: Driveline: Driveshaft General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 and 2020 Chevrolet Silverado 2500 trucks. One of the driveshaft joints may not have been properly welded, causing the driveshaft to separate while the vehicle is moving.
2019 Chevrolet Silverado. Full risk and remedy on each car's report.
Power Train: Driveline: Driveshaft Chrysler (FCA US LLC) is recalling certain 2018-2019 Ram 1500 pickup trucks. The rear driveshaft may have an incomplete weld fusion between the tube and tube yoke, which may lead to weld cracking or the driveshaft fracturing.
2018 Ram 1500. Full risk and remedy on each car's report.
Power Train: Axle Assembly Chrysler (FCA US LLC) is recalling certain 2018-2019 RAM 1500 trucks. The rear differential may have been insufficiently filled, possibly resulting in its failure.
2018 Ram 1500. Full risk and remedy on each car's report.
Power Train: Automatic Transmission Chrysler (FCA US LLC) is recalling certain 2018 Dodge Charger, Durango and Challenger, Jeep Grand Cherokee and Wrangler, Chrysler 300, and RAM 1500 vehicles. An incorrect transmission park lock rod may have been installed in the transmission.
2018 Ram 1500. Full risk and remedy on each car's report.
Power Train: Automatic Transmission Chrysler (FCA US LLC) is recalling certain 2017-2018 RAM 1500, 2500, 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles, all equipped with a column shifter. Pushing the brake pedal for prolonged periods when the vehicle is running and in PARK may cause the Brake Transmission…
2018 Ram 1500. Full risk and remedy on each car's report.
Power Train: Automatic Transmission General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, LaCrosse, Verano, and Enclave, and Chevrolet Impala, Malibu, Cruze, and Traverse, and GMC Acadia vehicles equipped with automatic transmissions. In the affected vehicles, the transmission shift cable adjuster may disengage…
2014 Chevrolet Traverse. Full risk and remedy on each car's report.
What happened when owners saw P0606?
10 of the 24 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.
The vehicle is experiencing a common know issue with the TCM. After power loss, after having the battery replaced, the vehicle was having transmission issues. The Codes pulled from the car were P06B8 and P0606. These codes are well know with the Ford Fiesta for failure of the TCM. There is an extended warranty coverage for 2011-2015 Fiestas that should clearly extend to this year as well. It has the same transmission. Ford claims they corrected the issue with new parts. The part number on the cars PCM matches those of the extended warranty. The warranty is to extend to 100,000 miles or 10 years. The vehicle meets both those requirements. The vehicle was manufactured in the same facility in…
PURCHASED NEW VEHICLE WITH LESS THAN 4,000 MILES WAS RUNNING FINE WHEN PARKED. WHEN IT WAS CRANKED TO GO HOME LISTED ESC FAILURE, SERVICE STEERING COLUMN LOCK, TRAILERING SYSTEM FAILURE, LANE DEPARTURE DISABLED, SPEED LIMITED TO 60 MPH. I WAS ABLE TO GET HOME, BUT THE BRAKES WERE SO HARD THAT IT WAS EXTREMELY DIFFICULT TO STOP. LOCAL DEALER IT WAS PURCHASED THROUGH "FIXED IT" LESS THAN 1,500 MILES LATER I'M HAVING THE SAME ISSUE! OBD HAS THE CODES C0021, C0021, P25A2, P25A2, P0606. I DO NOT FEEL SAFE DRIVING THIS TRUCK! IF THAT ISSUE WERE TO HAPPEN APPROACHING AN INTERSECTION I WOULD HAVE NO WAY OF STOPPING IN TIME. RIDICULOUS.
PURCHASED NEW VEHICLE WITH LESS THAN 4,000 MILES WAS RUNNING FINE WHEN PARKED. WHEN IT WAS CRANKED TO GO HOME LISTED ESC FAILURE, SERVICE STEERING COLUMN LOCK, TRAILERING SYSTEM FAILURE, LANE DEPARTURE DISABLED, SPEED LIMITED TO 60 MPH. I WAS ABLE TO GET HOME, BUT THE BRAKES WERE SO HARD THAT IT WAS EXTREMELY DIFFICULT TO STOP. LOCAL DEALER IT WAS PURCHASED THROUGH "FIXED IT" LESS THAN 1,500 MILES LATER I'M HAVING THE SAME ISSUE! OBD HAS THE CODES C0021, C0021, P25A2, P25A2, P0606. I DO NOT FEEL SAFE DRIVING THIS TRUCK! IF THAT ISSUE WERE TO HAPPEN APPROACHING AN INTERSECTION I WOULD HAVE NO WAY OF STOPPING IN TIME. RIDICULOUS.
NHTSA RECALL 18V-735 AND CODE P0606 INDICATES A FAULT IN THE ECM/PCM /P06B8 INTERNAL CONTROL MODULE TRANSACTION.
I am having the exact same issue as recall NHTSAID 14V614000, Manufacturer Campaign 14515. The car only gives me one warning, "Service stability track system" before the car completely stalls out. The car stalled out and completely shut off while I was on the freeway. I coasted to the shoulder of the freeway with a stalled car a no power steering. It has done that countless times. My code reader returned codes: P0606-PCM Processor Fault, P0685: ECM/PCM Power Relay Sense Circuit, P0689: EMC/PCM Power Relay Control Circuit, P0615: Starter Relay Control Circuit
The contact owns a 2017 Dodge Grand Caravan. The contact stated that while driving at an undisclosed speed, the vehicle experienced a loss of automotive power. The contact stated that several unknown warning lights were illuminated. The contact pulled over to the shoulder of the road and shift the vehicle into park(P); however, the vehicle was stuck in reverse(R), and failed to shift to neutral(N). The vehicle was towed to a local independent mechanic, where it was diagnosed and DTC: P1602 (PCM not Programmed) and P0606 (Error with PCM) were retrieved. The local dealer was not contacted. The manufacturer was not made aware of the failure. The failure mileage was approximately 150,000.
The contact owns a 2024 GMC Sierra 2500. The contact stated that the vehicle was idling roughly, and the RPM fluctuated between 500 and 1,000 RPM while idling. The check engine warning light was illuminated. Additionally, the contact stated that the fuel economy had decreased to 13 miles per gallon. The contact stated that upon scanning the vehicle, the contact retrieved DTC: P0606 and P062B. The contact related the failure to GM Campaign Number: N232415860 (Fuel Injector Flow Rate Compensation). The dealer was contacted and informed the contact that a fee would be charged for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and…
TRAVELING ON I-5 IN STOP AND GO TRAFFIC 0- 60 MPH WHEN TRANSMISSION STARTED SHIFTING ROUGHLY. IT THEN SHIFTED TO NEUTRAL AND WOULD NOT RESPOND TO SHIFTER INPUTS. I WAS IN THE SECOND LANE FROM THE RIGHT DOING 10 OR 15 MPH. I WAS ABLE TO FORCE MY WAY INTO THE RIGHT LANE AND OFF TO THE SHOULDER. I PUT THE TRANSMISSION IN SPORT AND PADDLE SHIFTER MODE WITH NO RESPONSE FROM THE SHIFT SELECTOR. THINKING THIS IS A COMPUTER PROBLEM I REBOOTED BY SHUTTING CAR OFF AND RESTARTING. ALL FUNCTIONS RETURNED TO NORMAL. TOOK TO DEALER WHERE I GOT VERY GOOD SERVICE BUT IT TURNS OUT THERE WAS A MERCEDES BULLETIN REGARDING THIS PROBLEM. IT REQUIRED A SOFTWARE UPDATE THAT HAS APPEARENTLY FIXED THE PROBLEM. WHAT…
Prior to paying cash for this vehicle, I had the dealership connect it to an obd-11 scanner to ensure that there weren't any codes. (I wasn't aware at the time that if the codes were cleared prior to the test drive and before the vehicle was drove a certain amount of miles nothing would show up ) The truck seemed to be in ok condition. Before even making it 10 miles off the lot to my home the salesman who was to follow me in my new vehicle had issues and upon return to the dealership the truck had several "stored" and "active" codes which the salesman again cleared and told me to drive home and come back Monday with the truck the truck went into catastrophic failure and has been sitting…
I was in Michigan and my car, which had been in great shape, unexpectedly failed to start after sitting for two days. After jump-starting the battery, the maintenance light turned on and my display showed a transmission malfunction. So while I traveled in my car to Columbus, unaware of the potential danger that my car could catch fire and explode because it couldn't shift beyond third gear, I stopped at AutoZone for an inspection where the man informed me about a specific error code called P0606. The car dealership, Holmes Motors, was well aware of the issues with my car because we had informed them about another defective Ford Fiesta they had in stock. However, they made a deliberate…
P0606: questions drivers ask
What does code P0606 mean?
P0606 is a generic OBD-II powertrain code. Its standard definition is "ECM/PCM Processor". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 9 car models.
Which cars get code P0606 most often?
In NHTSA owner complaints, P0606 is mentioned most for the Ford Fiesta (7), Chevrolet Silverado (4), Chevrolet Silverado LD (4), across 9 models and model years 2012 to 2024. Popular models collect more reports because more of them are on the road.
Is there a recall for code P0606?
No NHTSA recall text names P0606 directly. 6 recalls on the cars that report this code concern the same component owners name most (Power Train); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.
What should I do if my car shows P0606?
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 P0606 (including sub-code forms such as P060600). The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 3, 2026. How CarHooq reports are made.
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