Powertrain
generic / SAE
P2A81
Alternative Fuel Pump A Compression Stroke Valve Control Circuit Low
The control circuit of the compression stroke valve in alternative fuel pump A reports a control circuit low condition. Pump compression stroke cannot be commanded as expected.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 81
Possible causes
- Control wire shorted to ground high
- Internal short in valve coil medium
- Connector pins corroded - high contact resistance 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: hard
- DIY: shop recommended
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References
sae:J2012