P008A
Low Pressure Fuel System Pressure - Too Low
The low-pressure (lift pump) fuel pressure is below the expected value. Insufficient supply to the high-pressure pump leads to power loss and possible HP pump cavitation.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Fuel filter cloggedCommon
- Lift pump weak or failingCommon
- Leak or air ingress in low-pressure linePossible
Parts involved
- Lift Pump
- Fuel Filter
- Low Pressure Sensor
P008A is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.