P0A1C Possible Causes
- Faulty inverter with converter assembly
- Inverter with converter wiring harness open or short-circuited
- Inverter with converter assembly circuit poor electrical connection
What Does It Mean?
First Diagnose Code P0A1C
Check the “possible causes” listed above. Visually inspect the cable harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When Is Code P0A1C Detected?
The MG ECU located in the inverter with the converter assembly monitors its internal operation and sets DTCs when it detects malfunctions.
P0A1C Possible Symptoms
Engine light on (or service engine soon warning light)
P0A1C Description
The MG ECU (in the inverter with converter assembly) performs many diagnostic tests to verify the proper functioning of internal ECU systems. In one of these tests, the MG ECU checks the result of the engine CPU self-test. If the MG ECU detects a failure from the engine CPU self-test, it will conclude that there is an internal malfunction in the engine CPU. The Power Management Control ECU (HV CPU) will illuminate the MIL and set a DTC.