P2A37

AFCM Power Relay Sense Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–22 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Difficulty starting the engine
Check Engine Light Is On
Loss of engine power

Causes

AFCM relay malfunction
Open or short circuit in the relay control circuit
Wiring harness damage
Problems with the engine control unit
Short circuit in power supply

How to Fix

Check AFCM relay for damage
Diagnose the relay control circuit
Inspect the wiring harness for damage
Check the engine control unit for errors
Replace AFCM relay if necessary

Related codes

P2A36 P2A38 P2A39