P0694
Fan 2 Control Circuit High
P0694 is an OBD-II diagnostic trouble code meaning: Fan 2 Control Circuit High. Common causes: short circuit of the control wire to power (+12 v), open ground circuit. Estimated repair cost: $11–222.
Symptoms
- Check Engine Light
- The second fan runs constantly
- Increased energy consumption
- Noise of the second fan when the engine is cold
- Accelerated wear on the fan motor
Causes
- Short circuit of the control wire to power (+12 V)
- Open ground circuit
- Second cooling fan relay malfunction
- Damage to wiring or connectors
- Internal ECU fault
How to Fix
- Read OBD-II codes
- Check the operation of the second fan when the engine is cold
- Measure the voltage in the fan control circuit 2
- Check the second fan relay
- Check the wire for short to power
- If the circuit is working properly - ECU diagnostics
Related codes
Error P0694 by Vehicle Brand
FAQ
What does the P0694 code mean?
P0694 is an OBD-II diagnostic trouble code that indicates: Fan 2 Control Circuit High
What causes a P0694 error code?
The most common causes of P0694 include: Short circuit of the control wire to power (+12 V); Open ground circuit; Second cooling fan relay malfunction; Damage to wiring or connectors.
How do I fix a P0694 diagnostic trouble code?
To fix P0694: Read OBD-II codes. Check the operation of the second fan when the engine is cold. Measure the voltage in the fan control circuit 2. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0694?
Limited driving only, diagnose soon
How much does it cost to fix P0694?
The estimated repair cost for P0694 is $11–222. Actual cost depends on your vehicle, location, and labor rates.
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