Drive Motor Inverter Temperature Sensor Circuit Malfunction
The P0AF2 code indicates a problem in the circuit of the drive motor inverter temperature sensor. This sensor monitors the temperature of the inverter, which converts DC battery power to AC for the electric motor. A faulty sensor, wiring issue, or inverter control module problem can trigger this code, potentially leading to reduced motor performance or overheating.
01. Most Common Causes
- Faulty drive motor inverter temperature sensor
- Open or shorted wiring in the sensor circuit
- Corroded or loose connector at the sensor or inverter module
- Failed inverter control module
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced electric motor power or performance
- Overheating of the inverter or motor
- Possible vehicle entering limp mode
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to verify the code and check for related codes.
Step 2: Visually inspect the sensor and wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor resistance and compare to manufacturer specifications.
Step 4: Check the circuit for continuity and shorts using a multimeter.
Step 5: If all else is normal, test the inverter control module or replace the sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can lead to inverter overheating and potential damage to the electric drive system. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement, but can be higher if the inverter module needs replacement.