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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P026CAbnormal Injection QuantityManufacturer communications
13Original wording in English
CHEVROLET, GMC
Reported code forms P026C
Service Update. Certain trucks may falsely set fuel injector diagnostic trouble codes P026C and/or P20EE. Dealers will reprogram the engine control module (ECM).
CHEVROLET, GMC
Reported code forms P026C
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5.
CHEVROLET, GMC
Reported code forms P026C
This Preliminary information communicates to dealer technicians that DTC P026C are under investigation by GM Engineerinig.
MACK
Reported code forms P026C
Expired - Mack Chassis - Diagnostic Trouble Code ( DTC ) P026C Lighting The Malfunction Indicator Light ( MIL ) - US14+OBD13, US14+OBD15 And US14+OBD16 - Commonly Model Years 2015 To 2017 (Non-Common Rail Fuel System)…
VOLVO
Reported code forms P026C
Expired - Volvo Chassis - Diagnostic Trouble Code ( DTC ) P026C Lighting The Malfunction Indicator Light ( MIL ) - US14+OBD13, US14+OBD15 And US14+OBD16 - Commonly Model Years 2015 To 2017 (Non-Common Rail Fuel System)…
VOLVO
Reported code forms P026C
Volvo Chassis - Diagnostic Trouble Code ( DTC ) P026C Lighting The Malfunction Indicator Light ( MIL ) - US14+OBD13, US14+OBD15 And US14+OBD16 - Commonly Model Years 2015 To 2017 (Non-Common Rail Fuel System) Chassis
Check vehicle applicability
50A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | SILVERADO 2500 | 2021 |
| Chevrolet | SILVERADO 3500 | 2021 |
| Chevrolet | SILVERADO 4500 | 2021 |
| GMC | SIERRA 1500 | 2021 |
| GMC | SIERRA 2500 | 2021 |
| Hino | CONVENTIONAL TRUCKS W/JO8 | 2016 |
| Hino | NE8J | 2014 |
| Hino | NJ8J | 2014 |
| Hino | NV8J | 2014 |
| Jeep | GRAND CHEROKEE | 2015 |
| Mack | ANTHEM (AN) | 2017 |
| Mack | CHU | 2017 |
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.