DTC Descriptor

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.

DTC P12E3: Cylinder Deactivation Exhaust Control Valve Control Circuit
DTC P12E4: Cylinder Deactivation Exhaust Control Valve Control Circuit Low
DTC P12E5: Cylinder Deactivation Exhaust Control Valve Control Circuit High
DTC P12E7: Cylinder Deactivation Exhaust Control Valve Feedback Circuit Low Duty Cycle
DTC P12E8: Cylinder Deactivation Exhaust Control Valve Feedback Circuit High Duty Cycle
DTC P12E9: Cylinder Deactivation Exhaust Control Valve - Position Signal Exceeds Lower Limit
DTC P12EA: Cylinder Deactivation Exhaust Control Valve - Position Signal Exceeds Upper Limit
DTC P12EB: Cylinder Deactivation Exhaust Control Valve Feedback Circuit Low Frequency
DTC P12EC: Cylinder Deactivation Exhaust Control Valve Feedback Circuit High Frequency - Internal Component Fault
DTC P12ED: Cylinder Deactivation Exhaust Control Valve Feedback Circuit Incorrect Frequency - Internal Component Fault
DTC P12EF: Cylinder Deactivation Exhaust Control Valve Stuck Closed
DTC P12F0: Cylinder Deactivation Exhaust Control Valve Stuck Open
DTC P12F1: Cylinder Deactivation Exhaust Control Valve Position Not Learned
DTC P12F2: Cylinder Deactivation Exhaust Control Valve Performance
DTC P3100: Cylinder Deactivation Exhaust Control Valve Signal Performance