P0691 Saturn Code - Cooling Fan 1 Control Circuit Low
Quick Answer
The engine cooling fan system is composed of electric cooling fan and a cooling fan control module. Common causes include Faulty Cooling Fan 1 Relay, Cooling Fan 1 Relay harness is open or shorted, Cooling Fan 1 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
- P0691 Saturn indicates Cooling Fan 1 Control Circuit Low.
- Common causes
- Common causes include Faulty Cooling Fan 1 Relay, Cooling Fan 1 Relay harness is open or shorted, Cooling Fan 1 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 P0691 Saturn Description
Generally, the ECM will operate the cooling fan at specific percentages but, may scale the percentages either higher or lower in response to generator demand. The percentages at which the cooling fan operates may vary between vehicle lines and engines.
The cooling fan control module is thermally protected to prevent module damage in the case of a short circuit condition in the cooling fan motor. The scan tool output control is only capable of operating the cooling fan in the speed percentages allowed by the ECM. When multiple cooling fan speed requests are received, the ECM operates the fan at the highest of the speed requests.
The Diagnostic Trouble Code (DTC) will be set when the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.
**Cooling Fan design may vary
What are the Possible Causes of the DTC P0691 Saturn?
- Faulty Cooling Fan 1 Relay
- Cooling Fan 1 Relay harness is open or shorted
- Cooling Fan 1 Relay circuit poor electrical connection
- Faulty Cooling Fan 1
- Faulty Cooling Fan Control Module
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0691 Saturn?
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 P0691 Saturn 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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Frequently Asked Questions about P0691 Saturn Code
1. What are common symptoms of OBDII code P0691 on a Saturn related to Cooling Fan 1 Control Circuit Low?
The common symptoms include overheating of the engine, the cooling fan not turning on, and the engine temperature gauge showing high readings.
2. What are possible causes of the OBDII code P0691 on a Saturn indicating Cooling Fan 1 Control Circuit Low?
Possible causes include a faulty cooling fan 1 relay, damaged wiring or connectors in the cooling fan circuit, a malfunctioning engine coolant temperature sensor, or a defective cooling fan motor.
3. How can I diagnose the OBDII code P0691 on a Saturn for Cooling Fan 1 Control Circuit Low?
You can diagnose the issue by checking the cooling fan 1 relay for proper operation, inspecting the wiring and connectors for any damage or corrosion, testing the engine coolant temperature sensor, and verifying the functionality of the cooling fan motor.
4. Can I drive my Saturn with OBDII code P0691 indicating Cooling Fan 1 Control Circuit Low?
It is not recommended to drive your Saturn with this code as it can lead to engine overheating and potential damage. It's best to address the issue promptly to prevent further problems.
5. How do I repair OBDII code P0691 on a Saturn for Cooling Fan 1 Control Circuit Low?
To repair this code, you may need to replace the cooling fan 1 relay, repair any damaged wiring or connectors, replace the engine coolant temperature sensor if faulty, or replace the cooling fan motor if necessary.
6. Is it safe to continue driving if the cooling fan is not working due to OBDII code P0691 on a Saturn?
It is not safe to drive your Saturn if the cooling fan is not working properly. This can lead to engine overheating, which may cause severe damage to the engine.
7. Can a DIY enthusiast fix OBDII code P0691 on a Saturn indicating Cooling Fan 1 Control Circuit Low?
Depending on your experience and tools, you may be able to address this issue yourself by following repair guides and using diagnostic tools. However, if you are unsure, it is best to seek professional help.
8. How much does it cost to repair OBDII code P0691 on a Saturn related to Cooling Fan 1 Control Circuit Low?
The cost of repair can vary depending on the specific cause of the issue and whether you perform the repair yourself or take it to a mechanic. Costs may include parts and labor expenses.
9. Will resetting the OBDII code P0691 on a Saturn fix the issue with Cooling Fan 1 Control Circuit Low?
Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the issue. It is important to diagnose and repair the root cause of the code for a permanent solution.
10. How can I prevent OBDII code P0691 on a Saturn for Cooling Fan 1 Control Circuit Low in the future?
Regular maintenance of your cooling system, such as checking the cooling fan operation, inspecting wiring for damage, and monitoring engine temperature, can help prevent this code from reoccurring.
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