P1187 Honda Code - Fuel Tank Temperature Sensor Circuit Low Voltage
Quick Answer
The P1187 Honda code indicates that there is a low voltage condition in the fuel tank temperature sensor circuit. Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning fuel tank temperature sensor, Wiring Issues: Corroded or damaged wiring connections to the sensor can also trigger this code, Poor Ground Connection: A poor ground connection to the sensor or the engine control module can cause low voltage 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
- P1187 Honda indicates Fuel Tank Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning fuel tank temperature sensor, Wiring Issues: Corroded or damaged wiring connections to the sensor can also trigger this code, Poor Ground Connection: A poor ground connection to the sensor or the engine control module can cause low voltage 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 P1187 Honda Description
The P1187 Honda code indicates that there is a low voltage condition in the fuel tank temperature sensor circuit. The fuel tank temperature sensor is responsible for monitoring the temperature of the fuel inside the tank. This information is crucial for the engine control module to adjust the fuel mixture and ignition timing, ensuring optimal performance and efficiency. A low voltage reading from the sensor can lead to incorrect fuel calculations and potentially affect the vehicle's performance and fuel economy. If left unaddressed, it can also cause long-term damage to the engine and fuel system components.
Common Causes of P1187 Honda
- Faulty Sensor: The most common cause of this code is a malfunctioning fuel tank temperature sensor.
- Wiring Issues: Corroded or damaged wiring connections to the sensor can also trigger this code.
- Poor Ground Connection: A poor ground connection to the sensor or the engine control module can cause low voltage readings.
- Sensor Calibration: Improper calibration of the sensor can lead to inaccurate temperature readings.
Symptoms of P1187 Honda
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Poor Fuel Efficiency: A faulty fuel tank temperature sensor can lead to incorrect fuel calculations, resulting in decreased fuel efficiency.
- Engine Stalling: In some cases, the engine may stall or have difficulty starting due to inaccurate fuel mixture calculations.
- Rough Idle: The engine may experience rough idling or uneven performance when the sensor is not functioning correctly.
How to Fix P1187 Honda
- Diagnose the Issue: Use a scan tool to retrieve the error code and perform a visual inspection of the sensor and wiring connections.
- Test the Sensor: Test the fuel tank temperature sensor using a multimeter to check for proper voltage readings.
- Replace the Sensor: If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
- Check Wiring: Inspect and repair any damaged or corroded wiring connections to ensure a proper electrical connection.
- Clear Error Codes: After completing the repair, clear the error codes using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1187 Honda
The cost of repairing a P1187 Honda code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a fuel tank temperature sensor can range from $100 to $200, including parts and labor. Additional costs may apply if there are wiring repairs or other components that need attention. It's recommended to consult with a professional mechanic to get an accurate estimate for your vehicle.
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