OBD-II code · Powertrain (generic)
P0088 Fuel Rail/System Pressure Too High
The ECU detects fuel rail pressure above the desired setpoint and cannot reduce it through pressure regulator commands. Risk of injector damage and rail seal failure if not addressed.
Is it safe to drive with P0088?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPressure regulator stuck closed
- PossibleRail pressure sensor drift
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Pressure Regulator, High Pressure Fuel Pump, Fuel Rail Pressure Sensor
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.