P1660 Code - Cooling Fan Control Circuit
Quick Answer
The P1660 code indicates a problem with the cooling fan control circuit in the vehicle. Common causes include Faulty cooling fan relay, Broken or damaged wiring in the cooling fan circuit, Defective cooling fan motor. 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
- P1660 indicates Cooling Fan Control Circuit.
- Common causes
- Common causes include Faulty cooling fan relay, Broken or damaged wiring in the cooling fan circuit, Defective cooling fan motor.
- 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 P1660 Description
The P1660 code indicates a problem with the cooling fan control circuit in the vehicle. This circuit is responsible for regulating the operation of the cooling fan, which helps to dissipate heat from the engine and prevent overheating. When this code is triggered, it means that there is a malfunction in the control circuit, which can lead to issues with engine cooling and potentially cause the engine to overheat. This can result in reduced performance, increased emissions, and even engine damage if not addressed promptly.
Common Causes of P1660
- Faulty cooling fan relay
- Broken or damaged wiring in the cooling fan circuit
- Defective cooling fan motor
- Issues with the engine coolant temperature sensor
- Faulty engine control module (ECM)
Symptoms of P1660
- Engine overheating
- Cooling fan not running or running continuously
- Check engine light illuminated
- Poor fuel efficiency
- Loss of power
How to Fix P1660
- Diagnose the specific cause of the issue using a diagnostic scanner
- Inspect and test the cooling fan relay, wiring, and motor for faults
- Replace any faulty components such as the relay, wiring, or motor
- Clear the diagnostic trouble codes and test the cooling fan operation
- Verify that the issue has been resolved by monitoring the engine temperature during operation
Cost to Fix P1660
The cost of repairing a cooling fan control circuit issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that additional diagnosis time may be needed to pinpoint the exact cause of the issue, so it's recommended to consult with a professional mechanic for a more accurate estimate.
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Code P1660 Information for Specific Makes
- P1660 Acura — AT To ECM Signal Failure
- P1660 Audi — Engine Coolant Blower Motor Speed 1 Short To Ground
- P1660 Buick — Cooling Fan Control Circuit
- P1660 Cadillac — Cooling Fan Control Circuit
- P1660 Chevrolet — Cooling Fan Control Circuit
- P1660 Ford — Output Circuit Check Signal High
- P1660 GMC — Cooling Fan Control Circuit
- P1660 Honda — AT To ECM Signal Failure
- P1660 Hyundai — Cruise Control Switch Malfunction
- P1660 Isuzu — AT To ECM Signal Failure
- P1660 Volkswagen — Engine Coolant Blower Motor Speed 1 Short To Ground
Frequently Asked Questions about P1660 Code
1. What does the OBDII code P1660 indicate?
The P1660 code signifies an issue with the cooling fan control circuit, indicating a malfunction in the circuit responsible for operating the vehicle’s cooling fans.
2. What are common symptoms of code P1660?
Symptoms of a P1660 code may include overheating of the engine, the cooling fan failing to activate or deactivate properly, and the check engine light coming on.
3. What could cause a P1660 code to appear?
Causes of the P1660 code can include faults in the cooling fan relay, issues with the cooling fan motor, wiring problems in the cooling fan circuit, or a defective engine control module (ECM).
4. How can I diagnose the P1660 code in my vehicle?
Diagnosing the P1660 code typically involves checking the cooling fan operation, inspecting the relay and motor for faults, and using a multimeter to check for any open or short circuits in the wiring.
5. What steps are involved in repairing a P1660 code?
Repairing a P1660 code may involve replacing the faulty cooling fan relay or motor, repairing or replacing damaged wires in the cooling fan circuit, or in rare cases, replacing the ECM.
6. Is it safe to drive with the P1660 code?
Driving with a P1660 code can be risky as it may lead to engine overheating, especially in hot weather or when driving in heavy traffic, which can cause further engine damage.
7. How urgent is it to address a P1660 code?
It is quite urgent to address a P1660 code because failing to do so can result in overheating of the engine, which can lead to more serious mechanical issues and potentially expensive repairs.
8. Can a P1660 code affect my vehicle's fuel economy?
Yes, a P1660 code can indirectly affect fuel economy. If the engine operates at a higher temperature due to cooling fan issues, it may lead to decreased efficiency and increased fuel consumption.
9. What tools are required to diagnose and repair a P1660 code?
Tools needed may include a digital multimeter for electrical testing, a scan tool to read the code and monitor cooling fan operation, and basic hand tools to access and replace components.
10. Could ignoring a P1660 code lead to other vehicle issues?
Yes, ignoring a P1660 code can lead to the engine consistently running at higher temperatures, which increases the risk of engine damage such as warped cylinder heads or failed head gaskets, leading to more extensive repairs.
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