P0692: Fan 1 control: circuit high
The ECU sees too high a voltage on the radiator fan control circuit; the fan may run constantly or never come on at all.
| Code | P0692 |
|---|---|
| System | Engine and transmission |
| Group | P06xx, Control unit and auxiliary outputs |
| Type | Generic: it means the same on every make |
| Can you keep driving? | With care |
What P0692 means
The engine ECU runs the radiator fan, either directly, through a relay or through a small control module, to cool the engine when needed and whenever the air conditioning is on. This code means there is more voltage than expected on the fan 1 control circuit, usually from a wire touching a live feed, a relay stuck on or an open circuit, depending on the design.
Most common causes
- Fan relay with contacts stuck closed
- Damp or corroded fan or relay connector
- Control wire broken or touching a live feed
- Faulty fan control module
- ECU fault (uncommon)
Symptoms
- Fan running all the time, even with a cold engine
- Fan not starting and temperature rising when stationary
- Flat battery if the fan keeps running after switching off
- Engine warning light on
Can you drive with P0692?
With care You can drive while watching the temperature. If the fan is not working, avoid long traffic jams; if it never stops, the main risk is to the battery.
Open the bonnetthe in-depth explanation
How to check it
Note whether the fan runs on a cold engine just after starting, or keeps running long after switching off: either clue helps the garage tell a relay fault from a wiring fault.
How to read and clear P0692 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0692 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P068E The cylinder 8 glow plug control gives a lower signal than normal
- P068F The cylinder 8 glow plug control gives a higher signal than normal
- P0690 The engine control relay monitoring signal is high
- P0691 Fan 1 control: circuit low
- P0693 The fan 2 control gives a lower signal than normal
- P0694 The fan 2 control gives a higher signal than normal
- P0695 The fan 3 control gives a lower signal than normal
- P0696 The fan 3 control gives a higher signal than normal
- P0600 Serial communication link fault
- P0601 Internal control module memory checksum error
- P0602 Control module programming error
- P0603 Internal control module keep alive memory (KAM) error
What does code P0692 mean?
The engine ECU runs the radiator fan, either directly, through a relay or through a small control module, to cool the engine when needed and whenever the air conditioning is on. This code means there is more voltage than expected on the fan 1 control circuit, usually from a wire touching a live feed, a relay stuck on or an open circuit, depending on the design.
Can you drive with P0692?
You can drive while watching the temperature. If the fan is not working, avoid long traffic jams; if it never stops, the main risk is to the battery.
How do you clear P0692?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0692 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
