P1186 Ford Code - Fuel Pump Temperature Sensor Low
Quick Answer
The P1186 Ford code indicates a problem with the fuel pump temperature sensor registering a low voltage or resistance reading. Common causes include Faulty sensor: The most common cause of the P1186 code is a malfunctioning fuel pump temperature sensor, Wiring issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code, Poor electrical connection: A poor electrical connection between the sensor and the ECM can lead to inaccurate readings. 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
- P1186 Ford indicates Fuel Pump Temperature Sensor Low.
- Common causes
- Common causes include Faulty sensor: The most common cause of the P1186 code is a malfunctioning fuel pump temperature sensor, Wiring issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code, Poor electrical connection: A poor electrical connection between the sensor and the ECM can lead to inaccurate readings.
- 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 P1186 Ford Description
The P1186 Ford code indicates a problem with the fuel pump temperature sensor registering a low voltage or resistance reading. The fuel pump temperature sensor is a crucial component in the vehicle's fuel system, as it helps regulate the fuel pump's operation based on the temperature of the fuel. When the sensor detects that the fuel pump is running too hot or too cold, it sends a signal to the engine control module (ECM) to adjust the fuel pump's speed accordingly.
Common Causes of P1186 Ford
- Faulty sensor: The most common cause of the P1186 code is a malfunctioning fuel pump temperature sensor.
- Wiring issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code.
- Poor electrical connection: A poor electrical connection between the sensor and the ECM can lead to inaccurate readings.
- Fuel pump issues: Problems with the fuel pump itself, such as excessive wear or damage, can impact the sensor's performance.
Symptoms of P1186 Ford
- Decreased fuel efficiency: A faulty fuel pump temperature sensor can cause the fuel pump to run either too hot or too cold, leading to decreased fuel efficiency.
- Engine misfires: Incorrect fuel pump operation due to a faulty sensor can result in engine misfires and rough idling.
- Engine stalling: In severe cases, the engine may stall due to inconsistent fuel delivery caused by the malfunctioning sensor.
- Check Engine Light: The Check Engine Light may illuminate on the dashboard as a result of the P1186 Ford diagnostic trouble code.
How to Fix P1186 Ford
- Diagnose the issue: Use a diagnostic scanner to retrieve the trouble codes and confirm that the problem lies with the fuel pump temperature sensor.
- Locate the sensor: The fuel pump temperature sensor is typically located near the fuel pump or within the fuel tank.
- Replace the sensor: Disconnect the electrical connector, remove the old sensor, and install a new one in its place.
- Clear the codes: After replacing the sensor, clear the trouble codes using the diagnostic scanner to reset the Check Engine Light.
- Test drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the sensor is providing accurate readings.
Cost to Fix P1186 Ford
The cost of repairing a P1186 Ford code can vary depending on the make and model of the vehicle, as well as the labor rates in your area. Generally, the price for replacing a fuel pump temperature sensor ranges from $100 to $300, including parts and labor. However, additional costs may apply if there are other underlying issues contributing to the code. It's recommended to consult with a professional mechanic to get an accurate estimate based on your specific vehicle and location.
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