Powertrain
generic / SAE
P2147
Fuel Injector Group A Supply Voltage Circuit Low
The supply voltage measured at injector group A is below the calibrated threshold. Either the supply is shorted to ground or the source voltage has collapsed during cranking or load.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 47
Possible causes
- Supply wire shorted to ground high
- Weak battery, low cranking voltage medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.3–1.5 h
- Component: fuel injector
- Component: injector supply relay
- Component: injector wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012