P1AB3
Starter/Generator Phase U Current Sensor Circuit Low Voltage
P1AB3 is an OBD-II diagnostic trouble code meaning: Starter/Generator Phase U Current Sensor Circuit Low Voltage. Common causes: phase u current sensor fault, open or short circuit in the sensor circuit. Estimated repair cost: $28–94.
Symptoms
- Check Engine Light Is On
- Problems starting the engine
- Generator power reduction
- Unstable operation of the start-stop system
- Low battery
Causes
- Phase U current sensor fault
- Open or short circuit in the sensor circuit
- Poor contact or corroded connectors
- Wiring Harness Problems
- Alternator/Starter Module Malfunction
How to Fix
- Check the continuity of the phase U current sensor circuit
- Inspect connectors and contacts for damage
- Check the sensor supply voltage
- Test the current sensor (replace if necessary)
- Check the operation of the generator/starter
Related codes
FAQ
What does the P1AB3 code mean?
P1AB3 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Phase U Current Sensor Circuit Low Voltage
What causes a P1AB3 error code?
The most common causes of P1AB3 include: Phase U current sensor fault; Open or short circuit in the sensor circuit; Poor contact or corroded connectors; Wiring Harness Problems.
How do I fix a P1AB3 diagnostic trouble code?
To fix P1AB3: Check the continuity of the phase U current sensor circuit. Inspect connectors and contacts for damage. Check the sensor supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AB3?
Yes, but get it checked soon
How much does it cost to fix P1AB3?
The estimated repair cost for P1AB3 is $28–94. Actual cost depends on your vehicle, location, and labor rates.
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