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DTC codes / P06xx · Computer and output circuits / P0695

P0695Fan 3 Control Circuit Low

P0695 means the powertrain control module (PCM) commanded the third cooling fan control circuit on, but the voltage on that circuit stayed lower than expected, indicating a short to ground or an open load. The computer monitors the fan control output and flags this code when the feedback signal does not match the commanded state.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaComputer and output circuits

Symptoms you may notice

  • Often no symptoms besides the warning light, especially if the fan still runs on other speed settings
  • Engine coolant temperature may rise above normal in traffic or at idle because the third fan speed never activates
  • The cooling fan may run continuously at high speed or not at all, depending on the failure mode
  • Air conditioning performance may degrade when the condenser fan does not receive the third-speed command
  • A stored P0695 may be accompanied by a P0696 or P0697 if the circuit also has high-voltage or open faults

Common causes, most likely first

  1. Damaged or corroded fan control module connector pins or wiring harness at the fan assembly
  2. Shorted fan control wire chafed against the chassis or another ground source
  3. Failed cooling fan motor or fan control module internal short to ground
  4. Blown fuse or fusible link in the fan control power circuit
  5. PCM internal driver fault on the fan 3 control output
  6. Aftermarket fan or relay installation with incorrect wiring that grounds the control circuit

How to diagnose and fix it

  1. Inspect the fan control module connector and wiring for corrosion, chafing, or loose pins, and repair as needed
  2. Check the fan control circuit fuse and fusible link with a multimeter and replace if open
  3. Disconnect the fan control module and measure resistance from the control wire to ground to confirm a short
  4. Command the fan 3 output with a scan tool and verify voltage at the fan control module connector
  5. Substitute a known-good fan control module or relay to see if the code clears
  6. If the circuit and fan module test good, check for a PCM driver fault by backprobing the PCM connector
  7. Clear the code and road-test with the scan tool monitoring fan command and coolant temperature

What the fan 3 circuit really tells you

  • A shorted fan motor winding can pull the control circuit low and set P0695 even when the wiring and module look perfect, so always test the motor separately.
  • Many vehicles use a single fan control module for multiple speeds, and a failure inside that module often sets P0695 alongside P0696 or P0697 rather than by itself.
  • Aftermarket alarm or remote-start installations that tap into fan wiring are a common hidden cause of a low fan control circuit on otherwise stock vehicles.
  • The PCM may set P0695 intermittently when the fan connector gets wet or corroded, so a wiggle test while monitoring the circuit can reveal a fault that a static meter check misses.
  • Do not replace the PCM until you have load-tested the fan control circuit with a bulb or test light, because a weak driver can pass a voltmeter check but fail under actual fan current.

Can I keep driving with P0695?

You can usually drive short distances with P0695, but avoid heavy traffic, long idles, and towing until the fan circuit is repaired because the engine may overheat without the third fan speed. If the temperature gauge climbs above normal, pull over and shut the engine off.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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