OBD Code P0691

Fan 1 Control Circuit Low

What’s mean?

OBD2 Code P0691 Definition:
The Front Control Module (FCM) has detected a short to ground in the cooling fan relay 1 control circuit

Symptoms

Possible sumptoms of P0691
– Engine Light ON (or Service Engine Soon Warning Light) – Radiator fan inoperative – Possible engine overheating

Possible Causes

Possible causes of P0691
– Open or short cooling fan 1 relay circuit – Faulty low speed radiator fan relay – Faulty FCM

Possible Solutions