OBD-II Generic Error Code P0694: How to Fix It

Q: Can I drive with error code P0694?

It is not recommended. The cooling fan may not operate, risking engine overheating, especially in stop-and-go traffic or hot weather.

Q: What causes error code P0694?

Common causes include a blown fuse, faulty fan relay, damaged wiring or connectors, a defective fan motor, or rarely a failed ECM.

Q: Will clearing the code fix the problem?

Clearing the code with an OBD2 scanner will only erase the warning. The underlying issue must be repaired; otherwise, the code will return.

Q: How much does it cost to fix P0694?

If it's a relay or fuse, parts cost under $20. A fan motor replacement can cost $100-$300 for the part plus labor. ECM replacement is more expensive ($500+).

Q: Is the same as P0691?

No. P0691 is for Fan 1 control circuit low, while P0694 is for Fan 2 control circuit high. They indicate opposite faults on different fans.

Abstract

Error code P0694 indicates that the engine control module (ECM) has detected a high voltage condition in the Fan 2 control circuit. This typically means the cooling fan is not operating correctly, which can lead to engine overheating. The fix involves checking the fan relay, wiring, and the fan motor itself.