Faulty fan relay or fan control module for fan 3; Damaged, chafed or corroded wiring in the fan 3 control circuit (short to ground or open circuit); Poor connection or corroded terminals at the relay, fan motor or control unit connector; Failed fan motor drawing excess current or shorting internally; Blown fuse or fault in the fan power supply; Fault within the engine control unit output driver; Water ingress into a connector or relay box.

P0695

Fan 3 Control Circuit Low.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
6: AreaComputer and output circuits
95: FaultThe specific fault in that area

What it means

P0695 is the generic code for a low signal in the control circuit of cooling fan 3. The engine control unit commands the fan driver or relay and monitors the circuit voltage. It has seen a voltage lower than expected, which usually points to a short to ground, an open circuit or a fault in the driver or relay. How fan 3 is arranged and controlled varies by model and engine.

Symptoms

Engine temperature rising or overheating in traffic or at idle
Cooling fan 3 not running, or running constantly
Air conditioning performing poorly at idle
Engine warning light on
Coolant temperature warning on the dashboard
Reduced engine power in some cases

Possible causes

Faulty fan relay or fan control module for fan 3likely
Damaged, chafed or corroded wiring in the fan 3 control circuit (short to ground or open circuit)likely
Poor connection or corroded terminals at the relay, fan motor or control unit connectorlikely
Failed fan motor drawing excess current or shorting internallypossible
Blown fuse or fault in the fan power supplypossible
Fault within the engine control unit output driverrare
Water ingress into a connector or relay boxrare

How to diagnose

Read all stored and pending codes and note the freeze frame data, including coolant temperature and vehicle speed
Check the fan fuses and relays for fan 3, using the wiring diagram for the model to identify them
Inspect the fan wiring, connectors and relay terminals for chafing, heat damage, corrosion and water ingress
Use a bidirectional scan function to command fan 3 on and off and see if it responds
Check the fan motor and relay for a stuck-on or no-response condition and for excessive current draw
Measure the control circuit voltage at the relay or module with the circuit commanded on and off, and compare with the specification for the model
Test the control wire for a short to ground or an open circuit with the connectors disconnected, following the wiring diagram
Check for any software updates or technical bulletins for the model if the wiring and components test good

How to fix

Replace the faulty fan relay or fan control module
Repair or replace damaged wiring and fix the short to ground or open circuit
Clean or replace corroded connectors and terminals and make sure they are fully seated
Replace the fan motor if it is faulty or drawing excess current
Replace the blown fuse only after finding what caused it to fail
Repair or replace the engine control unit only after all wiring and components have been proven good

Can I keep driving?

Medium severity

Short, careful journeys are possible if the temperature stays normal, but a fan that is not working can cause overheating and serious engine damage. Watch the temperature gauge closely and stop if it rises, and get it fixed soon.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.