P1AA2
Starter/Generator Inverter Phase V Overtemperature
P1AA2 is an OBD-II diagnostic trouble code meaning: Starter/Generator Inverter Phase V Overtemperature. Common causes: inverter cooling system malfunction, damage or wear to the inverter. Estimated repair cost: $167–556.
Symptoms
- Hybrid system power reduction
- Warning messages on the dashboard
- Disabling the regenerative braking system
- Increased temperature in the engine compartment
- Problems starting the engine in hybrid mode
Causes
- Inverter cooling system malfunction
- Damage or wear to the inverter
- Problems with the wiring harness to the inverter
- Excessive load on the electrical system
- Malfunction of temperature sensors
How to Fix
- Check the level and condition of the coolant
- Diagnose the operation of the inverter cooling system
- Check the integrity of the wiring harness and connectors
- Test inverter temperature sensors
- Replacing the inverter if necessary
Related codes
FAQ
What does the P1AA2 code mean?
P1AA2 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Inverter Phase V Overtemperature
What causes a P1AA2 error code?
The most common causes of P1AA2 include: Inverter cooling system malfunction; Damage or wear to the inverter; Problems with the wiring harness to the inverter; Excessive load on the electrical system.
How do I fix a P1AA2 diagnostic trouble code?
To fix P1AA2: Check the level and condition of the coolant. Diagnose the operation of the inverter cooling system. Check the integrity of the wiring harness and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1AA2?
Limited driving only, diagnose soon
How much does it cost to fix P1AA2?
The estimated repair cost for P1AA2 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat