Powertrain
generic / SAE
P2148
Fuel Injector Group A Supply Voltage Circuit High
The injector group A supply voltage exceeds the calibrated upper limit. Often a sign of a short to battery voltage on the supply line, an over-charging alternator or an internal driver failure.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 48
Possible causes
- Wire shorted to battery voltage high
- Charging system overvoltage low
- 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 wiring
- Component: alternator
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012