Powertrain
generic / SAE
P2A74
Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Intermittent/Erratic
The control circuit of the alternative fuel hydraulic fuel pump select valve reports a control circuit intermittent/erratic condition. Pump path selection cannot be commanded reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 74
Possible causes
- Valve connector not seated high
- Harness chafing intermittently shorts the wire medium
- Connector with intermittent contact under vibration 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: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 1–4 h
- Component: alt fuel hyd pump select valve
- Component: wiring harness
- Component: afcm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012