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
Reported code forms P040B
32340B ? Service Update Bulletin (Service Procedure Revised). An engine misfire condition could occur on these vehicles causing the check engine/service engine soon light to illuminate, a rough or high idle condition,…
CHEVROLET
Reported code forms P040B
32340B – SERVICE UPDATE BULLETIN (SERVICE PROCEDURE REVISED). AN ENGINE MISFIRE CONDITION COULD OCCUR ON THESE VEHICLES CAUSING THE CHECK ENGINE/SERVICE ENGINE SOON LIGHT TO ILLUMINATE, A ROUGH OR HIGH IDLE CONDITION,…
CHEVROLET
Reported code forms P040B
32340A - SERVICE UPDATE (REVISED TO ADD 2016 MODEL YEAR VEHICLES). AN ENGINE MISFIRE CONDITION COULD OCCUR CAUSING THE CHECK ENGINE/SERVICE ENGINE SOON LIGHT TO ILLUMINATE, A ROUGH OR HIGH IDLE CONDITION, AND DIAGNOSTIC…
CHEVROLET
Reported code forms P040B
28340 - SERVICE UPDATE. RRPROGRAM THE ENGINE CONTROL MODULE. AN ENGINE MISFIRE CONDITION COULD OCCUR DURING THE ENGINE MAINTENANCE MODE (EMM) AFTER THE VEHICLE HAS BEEN SITTING FOR AN EXTENDED PERIOD OF TIME CAUSING THE…
CHEVROLET
Reported code forms P040B
Malfunction Indicator Lamp (MIL) On, Possible P0300, P040B, P041B, P01427 and/or P1429 TDCs Set
CHEVROLET
Reported code forms P040B
Malfunction Indicator Lamp (MIL) On, Possible P0300, P040B, P041B, P1427 and/or P1429 DTCs Set Some customers may comment on a check engine light illuminated. During diagnosis a technician may find one or more of the…
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | VOLT | 2016 |
Historical records · 8 · Historical vehicle association; OBD-II compatibility is not established by this record.
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.