P1AAF
Starter/Generator Phase U-V-W Circuit
P1AAF is an OBD-II diagnostic trouble code meaning: Starter/Generator Phase U-V-W Circuit. Common causes: open circuit or short circuit in the phase circuit, starter-generator malfunction. Estimated repair cost: $56–278.
Symptoms
- Difficulty starting the engine
- Check Engine Light Is On
- Generator power reduction
- Unstable engine operation
- Alerts appearing on the dashboard
Causes
- Open circuit or short circuit in the phase circuit
- Starter-generator malfunction
- Wiring Harness Problems
- Control unit malfunction
- Contact corrosion
How to Fix
- Check the integrity of the phase circuit U-V-W
- Inspect connections and connectors for damage
- Check the resistance of the starter-generator windings
- Scan the control unit for additional errors
- If necessary, replace the starter-generator
Related codes
FAQ
What does the P1AAF code mean?
P1AAF is an OBD-II diagnostic trouble code that indicates: Starter/Generator Phase U-V-W Circuit
What causes a P1AAF error code?
The most common causes of P1AAF include: Open circuit or short circuit in the phase circuit; Starter-generator malfunction; Wiring Harness Problems; Control unit malfunction.
How do I fix a P1AAF diagnostic trouble code?
To fix P1AAF: Check the integrity of the phase circuit U-V-W. Inspect connections and connectors for damage. Check the resistance of the starter-generator windings. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AAF?
Limited driving only, diagnose soon
How much does it cost to fix P1AAF?
The estimated repair cost for P1AAF is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat