Powertrain
generic / SAE
P2C28
Fuel Injector Group B Supply Sense Circuit High
Voltage on the supply sense circuit of fuel injector group B is above the expected window. Indicates overvoltage or wire shorted to B+.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberC / 28
Possible causes
- Alternator regulator drift - overvoltage high
- Sense wire shorted to B+ 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: shop recommended
- Estimated cost: 120–700 €
- Estimated time: 0.5–3 h
- Component: fuel injector group b
- Component: wiring harness
- Component: ecm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012