P0695
Fan 3 Control Circuit Low
Engine cooling / fans
Generic OBD-II
High
What it means
P0695 means the ECM has detected an abnormally low voltage (often a short-to-ground or open) on the control circuit for cooling fan 3. If that fan can't run when commanded, the engine can overheat at idle or in slow traffic, so this is worth addressing quickly even though the car may drive normally at speed.
High
Can I keep driving? Risky — a cooling fan that will not run can let the engine overheat; watch the temperature gauge and stop if it climbs.
Common symptoms
What you'll notice
- Engine running hot or overheating, especially at idle or in traffic
- Cooling fan 3 not running when it should
- Check-engine light on
- Weak air-conditioning performance at low speed
Common causes
Most likely first
- Faulty Fan 3 relay or fan control moduleLikely
- Short-to-ground or open in the Fan 3 control wiringCommon
- Corroded or loose connector at the fan or relayCommon
- Failed cooling fan motor or ECM fan-control driverLess often
How to diagnose & fix
Work through it in order
- Scan and confirm the low-voltage fault is on the Fan 3 control circuit.
- Command the fan on with a scan tool and check whether it runs.
- Inspect the Fan 3 relay, wiring, and connectors for a short-to-ground, open, or corrosion.
- Test the fan motor and the ECM control output; replace the failed part, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0695?+
Only with caution. If a cooling fan won't run, the engine can overheat in traffic or at idle. Watch the gauge and get it fixed promptly.
Can I just clear P0695?+
It returns as soon as the ECM commands the fan again unless the relay, wiring, or motor is repaired.
Related codes
Often seen with P0695
Read & clear P0695 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX