As a car owner, it is important to be aware of the various codes that may appear on your vehicle’s diagnostic system.
One of these is the P0187 Fuel Temperature Sensor B Circuit Range/Performance code.
This code typically indicates a problem with the fuel temperature sensor, which is an important component within your car’s fuel system.
In this article, we will explore the basics of the P0187 code, including its causes, symptoms, and potential solutions.
What is the P0187 Code?
The P0187 code is a diagnostic trouble code (DTC) that appears when the fuel temperature sensor B circuit is “out of range” or experiencing a performance issue.
Specifically, this code indicates that the sensor’s voltage output is outside of the manufacturer’s specified range. This can cause a range of issues within your car’s fuel system, including decreased fuel efficiency and engine performance.
Causes of the P0187 Code
The P0187 code can be caused by a number of factors, including:
- Failed fuel temperature sensor: The most common cause of the P0187 code is a faulty fuel temperature sensor. Over time, this sensor can become damaged or malfunction, leading to inaccurate readings and a subsequent drop in fuel efficiency.
- Corroded or damaged wiring: Another common cause of the P0187 code is corroded or damaged wiring within the fuel temperature sensor circuit. This can cause a short circuit or open circuit, leading to a loss of voltage and subsequent issues within the fuel system.
- Failed PCM or sensor module: In some cases, the P0187 code may be caused by a failed powertrain control module (PCM) or sensor module. This can occur if there is a glitch or malfunction within the module, leading to inaccurate readings and a subsequent drop in performance.
Symptoms of the P0187 Code
There are several symptoms that may indicate the presence of the P0187 code. These include:
- Check engine light: One of the most common symptoms of the P0187 code is the illumination of the check engine light. This light may appear after a few miles of driving or after multiple start and stop cycles.
- Decreased fuel efficiency: Because the P0187 code is related to issues within the fuel system, it can also lead to decreased fuel efficiency. This may be noticeable in a drop in gas mileage or a need to refuel more frequently.
- Poor engine performance: Another symptom of the P0187 code is poor engine performance. This may include hesitation or stalling during acceleration, rough idling, or reduced power output.
Solutions for the P0187 Code
If you suspect that your vehicle is experiencing issues related to the P0187 code, it is important to have it diagnosed and repaired by a qualified mechanic. Depending on the root cause of the issue, there are several potential solutions:
- Replace the fuel temperature sensor: In many cases, the best solution for the P0187 code is to replace the fuel temperature sensor. This will ensure that accurate readings are being taken, and can help to restore fuel efficiency and engine performance.
- Repair or replace wiring: If the issue is related to corroded or damaged wiring, your mechanic may be able to repair or replace the affected components. This will ensure that there is a steady flow of voltage to the sensor, ensuring accurate readings.
- Replace the PCM or sensor module: In some cases, the P0187 code may be related to a malfunctioning PCM or sensor module. If this is the case, your mechanic may recommend replacing the module to restore proper function.
The P0187 code is a relatively common issue that can affect a range of vehicles. If you suspect that your vehicle is experiencing this problem, it is important to have it diagnosed and repaired as soon as possible. By understanding the root cause of the issue and potential solutions, you can help to restore proper function to your vehicle’s fuel system and ensure optimal performance.
- What is a fuel temperature sensor?
A fuel temperature sensor is a component within your car’s fuel system that measures the temperature of the fuel. This information is then used by the car’s computer to adjust fuel delivery and optimize engine performance.
- What causes the P0187 code?
The P0187 code is typically caused by a faulty fuel temperature sensor, corroded or damaged wiring, or a failed PCM or sensor module.
- What are the symptoms of the P0187 code?
Symptoms of the P0187 code include the illumination of the check engine light, decreased fuel efficiency, and poor engine performance.
- Can I drive my car with the P0187 code?
While you may be able to drive your car with the P0187 code, it is not recommended. This issue can lead to decreased fuel efficiency and engine performance, and may cause further damage if left unaddressed.
- How can I fix the P0187 code?
To fix the P0187 code, your mechanic may recommend replacing the fuel temperature sensor, repairing or replacing wiring, or replacing the PCM or sensor module.