Reference meaning
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.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer communications
2Original wording in English
RAM
Check Engine Light (CEL) Illuminated Diagnostic Trouble Code (DTC) P0381-00 Wait to Start Lamp Inoperative
CHEVROLET, GMC
This PI communicates to dealer technicians that DTC P0381 is under investigation and to clear the DTC and return the vehicle to the customer.
Check vehicle applicability
16A 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 ↗ | 2025 |
| Chevrolet | SILVERADO 2500 ↗ | 2024 |
| Chevrolet | SILVERADO 3500 ↗ | 2025 |
| Chevrolet | SILVERADO 3500 ↗ | 2024 |
| GMC | SIERRA 2500 ↗ | 2025 |
| GMC | SIERRA 2500 ↗ | 2024 |
| GMC | SIERRA 3500 ↗ | 2025 |
| GMC | SIERRA 3500 ↗ | 2024 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Glow Plug/Heater Indicator Circuit Malfunction
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.