Fan 2 runs high on your vehicle? Overheating risk and cooling loss. Scan the P0694, test the fan circuit, and get the module repaired or reprogrammed.

Fan 2 not cooling your vehicle? Low control circuit can overheat the engine. Scan P0693, test wiring, then replace or reprogram the fan module today.

Fan 1 control circuit high in your vehicle can cause overheating; check the warning, scan the fan module, and have it repaired or reprogrammed today.

Fan 1 not turning on in your vehicle? P0691 (Fan 1 Control Circuit Low) can overheat the engine. Scan wiring, test fan module, and reflash or replace it.

Power relay circuit high on your vehicle? It can shut down the ECM/PCM, risking engine control loss. Scan P0690, test the relay, and consider reprogramm...

Engine won’t start or stalls on your vehicle – ECM/PCM Power Relay Sense Circuit Low means loss of control power. Scan, test relay, reprogram or replace.

Power relay fault cuts ECM/PCM power on your vehicle—engine may stall or not start. Scan P0688, test the relay circuit, then repair or reprogram.

Check‑engine light warning on your vehicle? ECM/PCM Power Relay Control Circuit high can cause loss of engine control. Scan and inspect relay or PCM now.

Low power relay warning on your vehicle? P0686 means ECM/PCM power relay circuit low—loss of control module. Scan, test relay, reprogram/replace.

Power‑relay failure causes no‑start or stalling in your vehicle—ECM/PCM power circuit open. Scan, test the relay, and replace the module quickly.