P1AAA
Starter/Generator Phase W Current Sensor Performance
P1AAA is an OBD-II diagnostic trouble code meaning: Starter/Generator Phase W Current Sensor Performance. Common causes: phase w current sensor fault, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Problems with the start-stop system
- Reduced battery charging efficiency
- Unstable generator operation
- Possible problems starting the engine
Causes
- Phase W current sensor fault
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the starter-generator control module
- Mechanical damage to wiring
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for oxidation
- Check the sensor readings using a scanner
- Replace faulty current sensor
- Test the operation of the system after repair
Related codes
FAQ
What does the P1AAA code mean?
P1AAA is an OBD-II diagnostic trouble code that indicates: Starter/Generator Phase W Current Sensor Performance
What causes a P1AAA error code?
The most common causes of P1AAA include: Phase W current sensor fault; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the starter-generator control module.
How do I fix a P1AAA diagnostic trouble code?
To fix P1AAA: Check the integrity of the sensor circuit. Inspect connectors and contacts for oxidation. Check the sensor readings using a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AAA?
Yes, but get it checked soon
How much does it cost to fix P1AAA?
The estimated repair cost for P1AAA is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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