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P0691 - Cooling Fan 1 Relay Control Circuit Low

Possible causes
- Faulty Low Speed Radiator Fan Relay
- Low Speed Radiator Fan Relay harness is open or shorted
- Low Speed Radiator Fan Relay circuit poor electrical connection
- Faulty Electric Fan
- Faulty Engine Control Module (ECM)
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Radiator fan inoperative
- Possible engine overheating
P0691 Description

The Engine Control Module (ECM) has detected a short to ground in the cooling fan relay 1 control circuit

P0691 Information for specific makes
P0691 AUDI Fan 1 Control Circuit Low
P0691 BMW Electric Fan Activation
P0691 CHRYSLER Cooling Fan 1 Relay Control Circuit Low
P0691 DODGE Cooling Fan 1 Relay Control Circuit Low
P0691 JEEP Cooling Fan 1 Relay Control Circuit Low
P0691 MINI Electric Fan Activation
P0691 SUBARU Cooling Fan 1 Control Circuit Low
P0691 SUZUKI Cooling Fan Relay 1 Control Circuit Low Voltage
P0691 VOLKSWAGEN Fan 1 Control Circuit Low
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