Fault Code P0691
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0691
Cooling Fan 1 Control Circuit Low
This code indicates a low voltage in the control circuit of the primary cooling fan (Fan 1). This can prevent the cooling fan from operating properly and lead to engine overheating.
Part Details
Part Name
Cooling Fan / Fan Relay
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪300 - ₪1200
Engine Location
Engine bay (near radiator)
Symptoms
- Engine overheating
- Check Engine Light on
- Cooling fan not operating
- Engine temperature warning light illuminates
Possible Causes
- 1Damaged wiring or short to ground in the control circuit
- 2Defective cooling fan relay
- 3Faulty cooling fan
- 4Problem with the Powertrain Control Module (PCM/ECM)
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