P3101
Cylinder 1 High-Pressure Fuel Injector Low Side Circuit Low
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)
Symptoms
- Misfire in cylinder 1
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Check Engine Light Illuminates
Causes
- Cylinder 1 injector malfunction
- Open or short circuit in the injector control circuit
- Poor contact in the injector connectors
- Engine control unit (ECU) malfunction
- Wiring harness damage
How to Fix
- Check the resistance of the injector of cylinder 1
- Inspect the injector control circuit for damage.
- Check the contacts in the injector and ECU connectors
- If necessary, replace the injector
- Check and replace wiring harness if necessary