P0A8C Possible Causes
- Faulty 14-volt power supply module
- 14-volt power supply module harness is open or shorted
- Poor electrical connection in the 14-volt power supply module circuit
What Does It Mean?
How to Fix Code P0A8C
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
P0A8C Possible Symptoms
Engine light on (or service engine soon warning light)
P0A8C Meaning
The Engine Control Module (ECM) monitors the 14-volt power supply module. The ECM sets the OBDII code when the 14-volt power supply module does not meet factory specifications.
OBDII Code P0A8C – 14-volt Power Supply Module System Voltage Unstable