P12ED GEO – Cylinder Deactivation Exhaust Flow Valve Feedback Circuit Incorrect Frequency Bank 1

P12ED GEO Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P12ED GEO Possible Causes

P12ED GEO Possible Causes

P12ED GEO Description

The cylinder deactivation exhaust flow control system consists of valves installed at the inlet of the muffler. The exhaust flow control system is used to tune 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 is not to factory specifications.