P3102
Cylinder 1 High-Pressure Fuel Injector Low Side Circuit High
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Unstable engine operation
- Misfire in cylinder 1
- Reduced engine power
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Broken or damaged wires to the injector
- Oxidation of contacts in the injector connector
- Cylinder 1 injector malfunction
- Problems with the engine control unit
- Short circuit in control circuit
How to Fix
- Check the integrity of the wiring to the injector
- Inspect and clean the injector connector contacts
- Check injector resistance
- Test the control signal from the ECU
- If necessary, replace the injector or wiring