What does code P2A33 mean?

Q: What does code P2A33 mean?

AFCM Power Relay Control Circuit Low. P2A33 indicates that the AFCM (Alternative Fuel Control Module) has detected a low-voltage condition on its power relay control circuit, meaning the module's command to energize the relay is not achieving the expected voltage. The AFCM monitors this circuit and sets the code when the control wire voltage falls below a calibrated threshold, which can prevent the relay from closing and supplying power to the alternative fuel system.

DTC codes / P2Axx · Hybrid propulsion / P2A33

P2A33AFCM Power Relay Control Circuit Low

P2A33 indicates that the AFCM (Alternative Fuel Control Module) has detected a low-voltage condition on its power relay control circuit, meaning the module's command to energize the relay is not achieving the expected voltage. The AFCM monitors this circuit and sets the code when the control wire voltage falls below a calibrated threshold, which can prevent the relay from closing and supplying power to the alternative fuel system.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.