Fan 1 Control Circuit High
What it means
P0692 means the engine computer detected an abnormally high voltage on the cooling fan 1 control circuit — typically a short to voltage, an open, or a failed relay. The concern is a fan that won't run when commanded, which can let the engine overheat at idle or in slow traffic.
Can I keep driving? Watch the temperature gauge — if the cooling fan isn't running the engine can overheat in traffic. Avoid low-speed driving until it's fixed.
Real-world scan data
Appears alongside · share of P0692 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Engine overheating at idle or in slow traffic
- Cooling fan not running when it should (or running constantly)
- Check-engine light on
- Weak air-conditioning cooling at low speeds
Common causes
Most likely first
- Failed cooling fan 1 relay or control moduleLikely
- Short-to-voltage or open in the fan control wiringCommon
- Corroded or loose fan connectorCommon
- Failed fan motorLess often
- Failed ECM (least common)Less often
How to diagnose & fix
Work through it in order
- Scan for codes and watch whether fan 1 commands on when the engine gets hot or the A/C is on.
- Check the fan relay and its fuse — swap in a known-good relay to test.
- Inspect the fan control wiring and connector for a short to voltage or an open.
- Test the fan motor directly with power and ground.
- Replace the relay, wiring, or fan as diagnosed. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0692?+
Can I just clear P0692?+
Related codes
Read & clear P0692 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.