What is P0695 fault code? What is the reason for the Cooling Fan 3 Relay Control Circuit High error code? How do you fix the P0695 fault code What are the causes of P0695 fault code symptoms?
What is the P0695? What is Fault Code? What does it mean?
If the powertrain controller module (PCM), detects a low voltage signal in control circuit of electric cooling fan, P0695 will trigger a code.
Motor fans equipped with electric motors cool the radiator of vehicles. Based on the coolant temperature sensor values (ECT), these engines are turned on/off by the PCM. The PCM turns the fans on when the ECT reaches a predetermined temperature. When the ECT reaches a temperature within the normal range, the PCM shuts off the fans.
The PCM switches on the fans by sending ground signal to the cooling fan relay. The voltage signal is near the battery voltage when the relay is turned off. The voltage signal should be close zero when the relay is turned on and grounded. The PCM will set the P0695 error code if it detects that the voltage signal has dropped below 10% from the manufacturer’s specifications.
Vehicles susceptible to the P0695 fault code include but aren’t limited to various Land Rover, Mercedes Benz and Ford models as well as Saab Dodge and Dodge models.
What is the P0695 Fault Code and Why Does It Happen?
Below are some reasons to set fault code P0695:
- – Defective cooling fan relay 3
- – Defective cooling fan motor 3
- – Broken, damaged, melted, corroded, or short-circuited cables
- – Remove loose and/or corroded connectors
- – Cooling fan fuse 3
- – If applicable, a defective cooling fan control module
- – Defective engine coolant temperature sensor
- – A PCM is not working properly or has to be reprogrammed
What are the symptoms of the P0695 Fault code?
These symptoms may be present in vehicles with code P0695.
- – Illumination for the check engine light
- – Not working cooling fan
- – Engine overheating
- – Air conditioner not working correctly
- – Reduced engine performance
How do I fix the P0695 fault code?
Always test the battery voltage before you attempt to solve electrical circuit problems. With the engine running, the battery voltage should be approximately 12.6V.
A blown cooling fan fuse is the most common cause for this fault code. It is important to locate the fuse and inspect it visually before removing it. The correct amperage fuse should be used to replace the fuse if it blows. If the fuse blows again after you have installed the new fuse, it is likely that there is a short circuit between the relay and the fuse. The cooling fan motor could be faulty if it blows even though the engine is at its maximum temperature. If the engine is not running and the ignition switch is off, turn the fan blades manually. If the blades don’t turn freely, the fan motor should be replaced.
If the fuse works, it’s most likely the cooling fan relay. Some vehicles only have one relay while others have two. Look at the diagram on top of the fuse box to locate the relay and fuses. You can refer to the vehicle manual for a diagram if you don’t have one. A 5-pin relay is used in most applications. These pins can be identified by the numbers 85, 86 or 87, 87a, and 30. Multimeters can be used to test the reliability and stability of the relay. It is easiest to replace the relay with one that is identical. If this does not solve the problem, you should consider replacing the relay with a different one. When working with components that are hot and moving, be careful.
Note: It is important to ensure that the relay being replaced is exactly the same. The PCM can be damaged if the relay is not installed correctly. The relays on Nissan vehicles are different, but they look almost identical. The socket inputs may look identical, but the characteristics of the sockets can be very different. This can harm the PCM.
The following repairs may be able to resolve the P0695 fault code:
- – Replacing a defective cooling fan relay
- – Replacing a blown fuse
- – Repair of short-circuited, damaged, melted, corroded or broken cables
- Repair of rusted and loose electrical connectors
- – Replacement or repair of the damaged cooling fan motor
- – If applicable, replacing the cooling fan control module.
- – Test the coolant temperature sensor and replace it if it is not up to manufacturer specifications
- – Reprogramming or replacing the PCM
The fan motor can appear to be defective in rare instances, but it is actually caused by fluid leaking from power steering. The hydraulic pressure from the power steering pump drives the cooling fan motor. This can cause problems with the motor’s performance. If this happens, the power steering leak must be fixed or replaced.
How serious is the P0695 Fault code?
While the fault code P0695 does not stop the vehicle starting, it can cause excessive heat to the engine and make the air conditioner not work properly. It is important to address this code as soon as possible due to the heat damage that has caused to the engine.
