P2A36
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.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Relay contact stays openCommon
- Feedback wire shorted to groundPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Afcm Power Relay
- Afcm
- Wiring Harness
P2A36 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.