Fuel Rail/System Pressure - Too High
2020-2024 Citroën C4 Electric 🇩🇪
Description
The fuel rail pressure is higher than the PCM commanded value.
Symptoms
- Check Engine Light
- Hard starting
- Rich running
- Injector damage risk
- Black exhaust smoke
Common Causes
- Faulty fuel pressure regulator
- Restricted fuel return line
- Stuck fuel pressure relief valve
Diagnostic Steps
- Monitor fuel pressure with scan tool
- Test fuel pressure regulator
- Check return line for restriction
- Inspect relief valve
Repair Notes
Replace fuel pressure regulator or clear fuel return restriction.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0088 on Other Vehicles
Citroën Berlingo
2018-2024 1.2L I3 PureTech
Citroën Berlingo
2018-2024 1.5L I4 BlueHDi
Citroën Berlingo
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo
2018-2025 1.5L I4 Diesel BlueHDi 100
Citroën Berlingo III FR
2018-2025 1.2L I3 Turbo PureTech 110
Citroën Berlingo III FR
2018-2025 1.5L I4 Diesel BlueHDi 100
Citroën C1 III
2014-2022 1.0L I3 VTi 72
Citroën C1 III
2014-2022 1.2L I3 PureTech 82
Common Questions
What does code P0088 mean on a 2020-2024 Citroën C4?
P0088 stands for "Fuel Rail/System Pressure - Too High". The fuel rail pressure is higher than the PCM commanded value.
What are the symptoms of P0088 on a Citroën C4?
Common symptoms of P0088 include: Check Engine Light, Hard starting, Rich running, Injector damage risk, Black exhaust smoke.
What causes P0088 on a 2020-2024 Citroën C4?
Common causes of P0088 include: Faulty fuel pressure regulator, Restricted fuel return line, Stuck fuel pressure relief valve.