What are the possible causes of DTC P12FD Chevrolet?
NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.
- Faulty cylinder deactivation exhaust flow valve
- Cylinder deactivation exhaust flow valve harness is open or shorted
- Poor electrical connection in the cylinder deactivation exhaust flow valve circuit
How to repair DTC P12FD Chevrolet?
Check 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. Check if Chevrolet has issued a factory service bulletin for code P12FD (models from 2013):
What are the possible symptoms of Chevrolet code P12FD?
- Check engine light on (or engine maintenance warning light soon)
What does Chevrolet code P12FD mean?
The cylinder deactivation exhaust flow control system consists of valves installed at the muffler inlet. The exhaust flow control system is used to adjust the exhaust note. The Powertrain Control Module (PCM) monitors the cylinder deactivation exhaust flow valve. The PCM sets the OBDII code when the cylinder deactivation exhaust flow valve does not meet factory specifications.