Powertrain
generic / SAE
P2635
Fuel Pump A Low Flow / Performance
The ECU detects insufficient fuel flow from fuel pump A. Either the pump is worn out, the supply line is restricted, or the pressure regulator does not allow proper flow.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 35
Possible causes
- Worn fuel pump high
- Clogged fuel filter medium
- Pressure regulator fault low
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 150–700 €
- Estimated time: 0.5–2.5 h
- Component: fuel pump
- Component: fuel filter
- Component: fuel pressure regulator
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012