What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
6Original wording in English
CHEVROLET, GMC
Reported code forms P3056
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp illuminated on Driver…
CHEVROLET, GMC
Reported code forms P3056
This Preliminary Information provides information to the technician about a additional diagnostic tip for a check engine lamp for DTC P3055 and P3056 and the start/Stop being inoperative.
CHEVROLET, GMC
Reported code forms P3056
This Preliminary Information provides information to the technician about a additional diagnostic tip for a check engine lamp for DTC p3055 and P3056 and the start/Stop being inoperative.
BUICK
Reported code forms P3056
This technical bulletin provides a procedure to clean out the HVAC drain hose if a vehicle has a condition of Front Carpet Wet and/or Musty Smell with Possible DTC P3055 or P3056 due to the water coming inside.
CHEVROLET
Reported code forms P3056
43890 - SERVICE UPDATE. CERTAIN VEHICLES, EQUIPPED WITH STOP/START ENGINE CONTROL OPTION, MAY ILLUMINATE THE MALFUNCTION INDICATOR LAMP (MIL) AND SET DIAGNOSTIC TROUBLE CODES (DTC) P3055 AND P3056. THIS CONDITION COULD…
TOYOTA
Reported code forms P3056
MALFUNCTION INDICATOR LAMP (MIL) ON HV BATTERY DIAGNOSTIC TROUBLE CODES (DTCS) P3000, P3056 AND/OR OTHER DIAGNOSTIC TROUBLE CODES (DTCS). *MJ
Check vehicle applicability
14A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LACROSSE | 2018 |
| Buick | LACROSSE | 2017 |
| Chevrolet | BLAZER | 2021 |
| Chevrolet | BLAZER | 2020 |
| Chevrolet | EQUINOX | 2021 |
| Chevrolet | EQUINOX | 2020 |
| Chevrolet | MALIBU | 2016 |
| Chevrolet | SILVERADO 1500 | 2021 |
| Chevrolet | SILVERADO 1500 | 2020 |
| Chevrolet | SILVERADO 1500 | 2019 |
| GMC | SIERRA 1500 | 2021 |
| GMC | SIERRA 1500 | 2020 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.