What are the possible causes of the P12A6 Chevrolet code?
- Faulty fuel pump driver module
- Fuel pump driver module harness is open or shorted
- Poor electrical connection in the fuel pump driver module circuit
- Faulty Engine Control Module (ECM)
How to fix the Chevrolet P12A6 code?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What are the possible symptoms of the P12A6 Chevrolet code?
- Check Engine Light on (or Service Engine Soon warning light)
What does the Chevrolet P12A6 code mean?
The Engine Control Module (ECM) provides ignition voltage to the fuel pump control module whenever the engine starts or runs. The ECM activates the fuel pump driver control module as long as the engine starts or runs and the ignition system reference pulses are received. While this allows voltage reception, the fuel pump driver control module provides a variable voltage to the fuel tank fuel pump module to maintain the desired fuel rail pressure. The Diagnostic Trouble Code (DTC) will be set if the ECM‘s fuel pump activation circuit status does not match the fuel pump activation circuit status detected by the fuel pump driver control module for more than 0.5 seconds.