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
1Original wording in English
VOLVO
This is a Technical Journal: Check Engine Light and DTC ECM-P138916. Do not replace the electric supercharger. This DTC is sent from the ECCM to the ECM, indicating low 48V system voltage
Check vehicle applicability
19A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Volvo | S90MHEV ↗ | 2026 |
| Volvo | S90MHEV ↗ | 2025 |
| Volvo | S90MHEV ↗ | 2024 |
| Volvo | S90MHEV ↗ | 2023 |
| Volvo | S90MHEV ↗ | 2022 |
| Volvo | V90CCMHEV ↗ | 2026 |
| Volvo | V90CCMHEV ↗ | 2025 |
| Volvo | V90CCMHEV ↗ | 2024 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Glow Plug Circuit High Side Low Input
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.