P0693
Fan 2 Control Circuit Low
Engine cooling
Generic OBD-II
High
What it means
P0693 means the engine computer has detected a low-voltage or short-to-ground fault in the control circuit for cooling fan 2. That fan helps hold engine temperature down at idle and low speed, so the main concern is overheating in traffic — watch the temperature gauge until the circuit is repaired.
High
Can I keep driving? Drive carefully and watch the temperature gauge — if the cooling fan will not run, the engine can overheat in traffic; stop if the temperature climbs.
Common symptoms
What you'll notice
- Engine overheating, especially at idle or in slow traffic
- Cooling fan 2 not running when it should
- Check-engine light on
- Reduced air-conditioning performance at low speed
Common causes
Most likely first
- Failed cooling fan 2 relay or control driverLikely
- Short to ground or open in the fan 2 control wiringCommon
- Corroded or loose connector at the fan or relayCommon
- Failed fan 2 motorLess often
- Faulty ECM (least likely)Less often
How to diagnose & fix
Work through it in order
- Scan for codes and confirm fan 2 does not run on command.
- Test the fan 2 relay and, if possible, swap in a known-good relay.
- Inspect the fan 2 control wiring and connectors for shorts to ground and corrosion.
- Test the fan motor directly with power and ground.
- If the relay, wiring, and motor are good, evaluate the ECM control driver.
FAQ
Quick answers
Is it safe to drive with P0693?+
Only cautiously — with a cooling fan out of action the engine can overheat in traffic or at idle. Keep speed up for airflow, watch the gauge, and repair it soon.
Can I just clear P0693?+
You can, but the fan circuit still will not work and the code returns; overheating risk remains until it is repaired.
Related codes
Often seen with P0693
Read & clear P0693 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