AFCM Power Relay Sense Circuit Low
The sense feedback voltage from the AFCM power relay is below the expected window. Indicates the relay output stays low when the relay is commanded on.
Affected components
- Afcm power relay
- Afcm
- Wiring harness
Common causes
- High likelihood: Relay contact stays open
- Medium likelihood: Feedback wire shorted to ground
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.