Fault Code Lookup › Chassis codes › C056D
C056D Chassis · generic range, no listed definition
C056D fault code: what 9 owners reported
C056D sits in the generic chassis range (chassis: brakes, ABS, stability control, steering and suspension), but its SAE definition is not in CarHooq's list, so this page shows only what owners reported. What it meant in practice is below, from 9 complaints owners filed with NHTSA. Updated November 9, 2026.
- 9owner reports
- 9car models
- 0mention a crash
- 0mention a fire
- 2015–2022model years
Which cars get code C056D?
Every model whose owners mentioned C056D 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 Impala Limited
2 reportsChevrolet Malibu
2 reportsChevrolet Camaro
1 reportChevrolet Colorado
1 reportChevrolet Malibu Limited
1 reportChevrolet Silverado
1 reportChevrolet Volt
1 reportGMC Terrain
1 reportWhere does C056D show up?
By brand
- Chevrolet8
- GMC1
Component the owner filed it under
Is there a recall for C056D?
The others concern the component owners file this code under (Steering) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.
Steering: Electric Power Assist System General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, 2017-2018 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist may fail.
2017 Chevrolet Camaro. Full risk and remedy on each car's report.
Steering: Electric Power Assist System General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, and 2017 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist system may fail.
2017 Chevrolet Camaro. Full risk and remedy on each car's report.
What happened when owners saw C056D?
9 of the 9 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.
WHILE I WAS DRIVING, POWER STEERING WAS LOST. IT WAS EXTREMELY DIFFICULT TO TURN THE STEERING WHEEL. I COULD HAVE EASILY CRASHED. THE DASH DISPLAY SHOWED A MESSAGE, CONFIRMING THE PROBLEM. MY OBD SCAN TOOL SHOWED THE TWO FOLLOWING DTC CODES LISTED UNDER POWER STEERING: C00800-12 AND C056D-3B.
My 2020 Chevrolet Malibu experienced a sudden and severe electrical failure after driving through normal roadway water. Immediately afterward, the vehicle displayed multiple safety‑critical warnings including loss of power steering assist, Electronic Stability Control (ESC) faults, brake control faults, and reduced propulsion. A GM dealership inspected the vehicle, scanned the modules, and found more than a dozen network and chassis‑related diagnostic trouble codes, including: B3979, U0164, B1325, B3122, U0121, C0196, C0460, B1011, B097B, B3205, C056E, C056D, U0420, U1510, C0545, U0422. These codes indicate failures in the steering system, brake control module, stability control system, body…
STARTED MY CAR STARTED TO PULL OUT OF THE PARKING LOT INTO A HIGHWAY LOST POWER STEERING ASSIST AND HAD TO TURN STEERING WHEEL WITH A LOT OF EFFORT AND AVOIDED A COLLISION . PULLED OVER TO SIDE OF ROAD SHUT OFF AND RESTARTED STILL NO POWER STEERING . PULLED TWO CODES AND DROVE HOME 75 MILES WITH NO ELECTRIC POWER ASSIST. TOOK CAR TO CHEVROLET GAVE THEM CODES AND THEY DID NOT TELL ME OF ANY RECALL , ALTHOUGH MANY CAMAROS HAVE BEEN RECALLED FOR EXACT PROBLEM. I AM A MASTER ASE TECHNICIAN . THIS WAS A DANGEROUS SITUATION IF IT'S NOT IN THE RECALL IT SHOULD BE . THE CAR IS AT PARKWAY CHEVROLET IN TOMBALL TX . CODES C056D, C047A
I STARTED MY 2017 CHEVROLET COLORADO IN A PARKING LOT AND HAD NO POWER STEERING. I RECEIVED A POWER STEERING FAILURE MESSAGE TELLING ME TO DRIVE WITH CAUTION AND TO HAVE THE POWER STEERING SERVICED. I LEFT IT RUN FOR 15 MINUTE AND SHUT IT OFF. I RETURNED A COUPLE HOURS LATER AND THE POWER STEERING HAD RETURNED. THE DEALER FOUND CODE C056D. THEY HAD TO REPLACE THE RACK AND PINON ASSEMBLY. I AM THE ORIGINAL OWNER OF THE TRUCK AND IT HAS 38000 MILES ON IT. THE DEALER REDUCED THE REPAIR COST FROM $1500 TO $900. I FOUND THAT THERE WAS A RECALL FOR 2015 AND 2016 COLORADOS FOR THE SAME PROBLEM. A SERVICE BULLETIN 16-NA-065 WAS ISSUED FOR 2015 AND 2016 MODELS AND THEN LATER INCLUDED 2017 AND 2018…
SERVICE POWER STEERING CAME ON, CAR WAS COMPLETELY UNABLE TO CONTROL WITH ZERO STEERING ASSIST. EXTREMELY DANGEROUS ALMOST HIT MULTIPLE CARS TURNING AT LOW SPEED. DEALERSHIP CLAIMS THE CODE C056D BUT IS TAKING ZERO RESPONSIBILITY CHARGING OUTRAGEOUS PRICES FOR AN ELECTRICAL UNIT THAT HAS FAILED IN LESS THAN 70,000 MILES. *TR
POWER STEERING FAILED WHILE DRIVING INTO BALTIMORE CITY ON I-95. WAS ABLE TO CONTROL THE VEHICLE WITHOUT POWER STEERING BUT IT WAS DIFFICULT. THE POWER RETURNED AT THE END OF THE WORK DAY AFTER THE VEHICLE DID NOT MOVE ALL DAY. TOOK THE VEHICLE TO THE DEALER. THE DEALERSHIP SAID IT FOUND "SCAN CODE C056D FOUND BULLETIN 18-NA-313".
I had an issue with the All Wheel Drive system. The message Service all wheel drive system appeared as I was driving the vehicle. They found a rear differential module software issue 2810695. They found DTC C056D stored in rear diff control module. They programmed rear diff module and retested. Claim code is 1BYN199108119. I do not have any parts but I was told that they send warranty components back to the manufacturer for inspection.
STABLITRACK NOT WORKING, ABS NOT WORKING AND STEERING ASSISTANCE NOT WORKING INTERMITTENTLY. CAR HAD ONLY 21220 MILES ON IT. DEALER SAYS IT HAS AN INTERNAL MALFUNCTION IN THE ELECTRONIC CONTROL MODULE, CODE C056D. PROBLEM OCCURRED WHILE IN MOTION IN A STRAIGHT LINE ON A CITY STREET AT ABOUT 35 MILES PER HOUR AND THEN VERIFIED WHILE VEHICLE WAS STATIONARY. THE STEERING ASSISTANCE PROBLEM HAPPEN WHILE STATIONARY, THEN VERIFIED WHILE IN MOTION TURNING ON A CITY STREET AT A SLOW SPEED. VERIFICATION WAS IN ACCORDANCE TO INSTRUCTIONS IN THE OWNERS MANUAL.
LOSE A STEERING NO STEERING ASSISTANCE MILEAGE 400KM USING A GM GDS DTC-C056D-ELECTRONIC CONTROL UNIT INTERNAL MALFUNCTION/ DLC PIN 6-14,SYMPTOM BYTE 39
C056D: questions drivers ask
What does code C056D mean?
C056D sits in the generic chassis range (chassis: brakes, ABS, stability control, steering and suspension), but its SAE definition is not in CarHooq's list, so CarHooq shows only what owners reported. 9 owners reported it to NHTSA, most often for the Chevrolet Impala (3), Chevrolet Impala Limited (2), Chevrolet Malibu (2); their reports describe what happened.
Which cars get code C056D most often?
In NHTSA owner complaints, C056D is mentioned most for the Chevrolet Impala (3), Chevrolet Impala Limited (2), Chevrolet Malibu (2), across 9 models and model years 2015 to 2022. Popular models collect more reports because more of them are on the road.
Is there a recall for code C056D?
No NHTSA recall text names C056D directly. 2 recalls on the cars that report this code concern the same component owners name most (Steering); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.
What should I do if my car shows C056D?
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 C056D. The code is in a generic range but its standard definition is not in CarHooq's list, 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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