P0696 Code - Cooling Fan 3 Control Circuit High
Quick Answer
The P0696 diagnostic trouble code (DTC) indicates a problem with the Cooling Fan 3 Control Circuit being too high. Common causes include Faulty cooling fan control module: A malfunctioning control module can send incorrect signals to the cooling fan, causing it to run at a high speed, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the control module and the cooling fan, Malfunctioning temperature sensor: A faulty temperature sensor can provide inaccurate readings to the control module, leading to an incorrect fan speed. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0696 indicates Cooling Fan 3 Control Circuit High.
- Common causes
- Common causes include Faulty cooling fan control module: A malfunctioning control module can send incorrect signals to the cooling fan, causing it to run at a high speed, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the control module and the cooling fan, Malfunctioning temperature sensor: A faulty temperature sensor can provide inaccurate readings to the control module, leading to an incorrect fan speed.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0696 Description
The P0696 diagnostic trouble code (DTC) indicates a problem with the Cooling Fan 3 Control Circuit being too high. This code is typically found in vehicles with electric cooling fans, which are responsible for maintaining the engine's optimal operating temperature. The cooling fan control module monitors the temperature of the engine and activates the cooling fan when needed to prevent overheating. When the control circuit for Cooling Fan 3 is registering a high voltage, it means that the fan is running at a higher speed than necessary, which can lead to various issues.
Common Causes of P0696
- Faulty cooling fan control module: A malfunctioning control module can send incorrect signals to the cooling fan, causing it to run at a high speed.
- Wiring issues: Damaged or corroded wiring connections can disrupt the communication between the control module and the cooling fan.
- Malfunctioning temperature sensor: A faulty temperature sensor can provide inaccurate readings to the control module, leading to an incorrect fan speed.
- Defective cooling fan: A failing cooling fan motor can result in the fan running at a high speed continuously.
Symptoms of P0696
- Engine overheating: The most common symptom associated with the P0696 code is engine overheating due to the cooling fan running at a high speed constantly.
- Decreased fuel efficiency: The continuous operation of the cooling fan at a high speed can lead to increased fuel consumption.
- Loud noise from the engine bay: A malfunctioning cooling fan running at high speed may produce a noticeable noise.
- Check Engine Light: The illumination of the Check Engine Light on the dashboard is a common indicator of this code being present.
How to Fix P0696
- Diagnose the issue: Use a scan tool to retrieve the DTC and perform a visual inspection of the cooling fan system to identify the root cause of the problem.
- Test the cooling fan control module: Check the control module for proper operation and replace it if necessary.
- Inspect the wiring: Thoroughly examine the wiring harness for any signs of damage or corrosion and repair or replace as needed.
- Check the temperature sensor: Test the temperature sensor to ensure it is providing accurate readings to the control module.
- Replace the cooling fan: If the fan motor is found to be defective, replace the cooling fan assembly to resolve the issue.
Cost to Fix P0696
The cost of repairing a Cooling Fan 3 Control Circuit High issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the parts for this repair can range from $100 to $300, while the labor costs can be between $100 and $200. Therefore, the total repair cost can be estimated to be between $200 and $500. It's important to note that these are rough estimates, and actual costs may vary based on the factors mentioned earlier. It's recommended to consult with a qualified mechanic or auto repair shop to get an accurate quote for your specific situation.
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