P0694 Code - Cooling Fan 2 Control Circuit High
Quick Answer
The Engine Control Module (ECM) grounds the low-speed relay, which is the Fan Low relay, and the high-speed relay, which is the Fan High relay, control circuits through an internal solid-state device called a driver. Common causes include Faulty Cooling Fan 2 Relay, Cooling Fan 2 Relay harness is open or shorted, Cooling Fan 2 Relay circuit poor electrical connection. 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
- P0694 indicates Cooling Fan 2 Control Circuit High.
- Common causes
- Common causes include Faulty Cooling Fan 2 Relay, Cooling Fan 2 Relay harness is open or shorted, Cooling Fan 2 Relay circuit poor electrical connection.
- 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.
Code P0694 Description
What are the Possible Causes of the DTC P0694?
- Faulty Cooling Fan 2 Relay
- Cooling Fan 2 Relay harness is open or shorted
- Cooling Fan 2 Relay circuit poor electrical connection
- Faulty Cooling Fan 1
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0694?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0694 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P0694 Buick — Cooling Fan 2 Control Circuit High
- P0694 Cadillac — Cooling Fan 2 Control Circuit High
- P0694 Chevrolet — Cooling Fan 2 Control Circuit High
- P0694 Chrysler — Cooling Fan 2 Control Circuit High
- P0694 Dodge — Cooling Fan 2 Control Circuit High
- P0694 GMC — Cooling Fan 2 Control Circuit High
- P0694 Jeep — Cooling Fan 2 Control Circuit High
- P0694 Pontiac — Cooling Fan 2 Control Circuit High
- P0694 Saturn — Cooling Fan 2 Control Circuit High
- P0694 Subaru — Cooling Fan 2 Control Circuit High
- P0694 Suzuki — Cooling Fan 2 Control Circuit High Voltage
Frequently Asked Questions about P0694 Code
1. What are the common symptoms of OBDII code P0694 (Cooling Fan 2 Control Circuit High)?
Symptoms may include the cooling fan running at high speed continuously, engine overheating, and the Check Engine light illuminating on the dashboard.
2. What can cause the OBDII code P0694 to trigger?
Possible causes of P0694 include a faulty cooling fan relay, damaged wiring or connectors in the cooling fan circuit, a malfunctioning cooling fan control module, or a problem with the Engine Control Module (ECM).
3. How can I diagnose the issue related to the Cooling Fan 2 Control Circuit High code?
Diagnosis typically involves checking the cooling fan operation, inspecting the wiring and connectors for damage or corrosion, testing the cooling fan relay, and using a scan tool to monitor the signals between the ECM and the cooling fan control module.
4. Can I continue driving my vehicle with OBDII code P0694 present?
It is not recommended to drive with the P0694 code active, as it can lead to engine overheating and potentially cause serious damage to the engine components. It is best to address the issue promptly.
5. Is it possible to clear the OBDII code P0694 without fixing the underlying issue?
Clearing the code without resolving the root cause will only temporarily turn off the Check Engine light. The code is likely to return if the issue is not addressed, and the cooling fan problem may persist.
6. How expensive is it to repair the Cooling Fan 2 Control Circuit High issue?
The cost of repair can vary depending on the specific cause of the problem. Simple fixes such as replacing a relay or fixing a wiring issue may be relatively inexpensive, while replacing a control module or ECM can be more costly.
7. Are there any DIY tips for addressing OBDII code P0694?
If you have experience with automotive electrical systems, you may be able to inspect the wiring and connectors yourself for any obvious signs of damage. However, for more complex diagnosis and repair, it is recommended to seek professional help.
8. Can a malfunctioning cooling fan cause other problems in the vehicle?
Yes, a malfunctioning cooling fan can lead to engine overheating, which can cause damage to the engine components and potentially result in a breakdown. It is important to address cooling system issues promptly.
9. How long does it typically take to repair the Cooling Fan 2 Control Circuit High issue?
The repair time can vary based on the complexity of the problem and the availability of parts. Simple fixes may be completed within a few hours, while more involved repairs could take longer.
10. Will fixing the OBDII code P0694 improve my vehicle's performance or fuel efficiency?
Addressing the issue related to P0694 is essential for maintaining proper engine cooling and preventing overheating. While it may not directly impact performance or fuel efficiency, a properly functioning cooling system is crucial for the overall health and longevity of the vehicle.
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