Powertrain
generic / SAE
P008B
Low Pressure Fuel System Pressure - Too High
The low-pressure fuel pressure is above the expected value. Often caused by a stuck-closed fuel return valve or a faulty pressure regulator.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 8B
Possible causes
- Pressure regulator stuck closed high
- Return line blocked medium
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–3 h
- Component: low pressure regulator
- Component: fuel return valve
- Component: low pressure sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012