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.
P0090Fuel Pressure Regulator 1 Control Circuit Opened Link to engine warning light on and limp home modeP0090Fuel Pressure Regulator Control Circuit 1 Open" stored in the engine control unit (ECM)Manufacturer communications
2Original wording in English
MASERATI
Reported code forms P0090
This Diagnostic Sheet serves as a guide and provides additional diagnostic info for possible DTC"P0090 - Fuel Pressure Regulator Control Circuit 1 Open" stored in the engine control unit (ECM).
MASERATI
Reported code forms P0090
Guidance to investigate vehicles related to the storage of ECM of DTC P0090 - Fuel Pressure Regulator 1 Control Circuit Opened Link to engine warning light on and limp home mode.
Check vehicle applicability
2A 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.
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.