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.

Real-world scan data

Seen in

453

scans in the past year

Found in

0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P0693 scans

P0691in 48.1% of scans

P1646in 23.8% of scans

P1691in 20.1% of 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, 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.

Read & clear P0693 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX