P0271high severityPowertrain
Cylinder 4 Injection Circuit High
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The PCM detects a high voltage condition in the cylinder 4 injector control circuit. This may result in improper fuel delivery to that cylinder.
Symptoms
- Misfire on cylinder 4
- Rough idle
- Reduced engine power
Common causes
- Faulty cylinder 4 injector
- Short to voltage in injector wiring
- Open injector circuit
- Faulty PCM
Diagnostic steps
- Retrieve trouble codes
- Check cylinder 4 injector wiring for shorts
- Test injector operation
- Repair wiring or replace injector
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