Powertrain
Definition only
Lights the check engine lamp
P2C27: Fuel Injector Group B Supply Sense Circuit Low
Standardized SAE J2012 code · P2Cxx codes
What does P2C27 mean?
Voltage on the supply sense circuit of fuel injector group B is below the expected window. Indicates collapsed supply or short to ground.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Common causes
- High Supply rail collapsed under load
- Medium Sense wire shorted to ground
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2C27 on the same make and model first.
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