P0185 Fuel Temperature Sensor A Circuit Intermittent

The P0185 error code is a generic diagnostic trouble code that indicates an intermittent issue with the Fuel Temperature Sensor A Circuit.

This sensor is an important component in the fuel system, as it provides vital information to the engine control module (ECM) that is necessary for proper engine performance.

In this article, we will explore the details of this error code, including its causes, symptoms, and possible solutions.

What is the P0185 Error Code?

The P0185 error code is a diagnostic trouble code that indicates an intermittent problem with the Fuel Temperature Sensor A Circuit.

This sensor is responsible for providing the ECM with information about the fuel temperature as it circulates through the fuel system.

The ECM uses this information to set the correct fuel delivery and ignition timing for optimal engine performance.

When the ECM detects an issue with the Fuel Temperature Sensor A Circuit, it will set the P0185 error code, which will then trigger the Check Engine Light to illuminate on the vehicle’s dashboard.

This error code can be caused by a variety of issues, including a faulty fuel temperature sensor, damaged wiring, or a malfunctioning ECM.

Causes of the P0185 Error Code

The P0185 error code can be caused by a number of different issues. Some common causes include:

  1. Faulty Fuel Temperature Sensor: One of the most common causes of the P0185 error code is a faulty fuel temperature sensor. Over time, these sensors can become damaged or worn out, which can cause them to malfunction and send incorrect information to the ECM.
  2. Damaged Wiring: Another common cause of the P0185 error code is damaged wiring. If the wiring that connects the fuel temperature sensor to the ECM becomes damaged or corroded, it can cause the sensor to malfunction and trigger the error code.
  3. Malfunctioning ECM: In some cases, the P0185 error code can be caused by a malfunctioning ECM. If the ECM is not functioning properly, it may not be able to receive and interpret the signals sent by the fuel temperature sensor, which can trigger the error code.

Symptoms of the P0185 Error Code

The P0185 error code can cause a variety of symptoms. Some common symptoms include:

  1. Check Engine Light: The most obvious symptom of the P0185 error code is the Check Engine Light. When the ECM detects an issue with the Fuel Temperature Sensor A Circuit, it will set the error code, which will cause the Check Engine Light to illuminate on the dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning fuel temperature sensor can cause the ECM to deliver the incorrect amount of fuel to the engine, which can lead to decreased fuel efficiency.
  3. Engine Misfires: If the ECM is delivering the incorrect amount of fuel to the engine, it can cause the engine to misfire or run roughly, which can cause power loss and decreased performance.

Solutions for the P0185 Error Code

If you are experiencing the P0185 error code, there are several potential solutions to consider. These may include:

  1. Replace the Fuel Temperature Sensor: If the fuel temperature sensor is faulty, it will need to be replaced. This is a relatively simple and straightforward repair that can be completed by a qualified mechanic.
  2. Repair Damaged Wiring: If the wiring that connects the fuel temperature sensor to the ECM is damaged or corroded, it will need to be repaired or replaced.
  3. Replace the ECM: In some cases, the P0185 error code may be caused by a malfunctioning ECM. If this is the case, the ECM will need to be replaced by a qualified mechanic.

Conclusion

The P0185 error code is a common issue that can cause a variety of symptoms, including decreased fuel efficiency and engine misfires. If you are experiencing this error code, it is important to have your vehicle diagnosed and repaired by a qualified mechanic as soon as possible. By addressing the underlying issue causing the error code, you can help to ensure that your vehicle is running properly and efficiently.

FAQs

  1. What is the Fuel Temperature Sensor?
    The Fuel Temperature Sensor is a component in the fuel system that measures the temperature of the fuel as it circulates through the system. This sensor provides crucial information to the ECM, which uses it to set the correct fuel delivery and ignition timing.

  2. How do I know if my vehicle has the P0185 error code?
    If your vehicle has the P0185 error code, the Check Engine Light will illuminate on the dashboard. You may also notice decreased fuel efficiency or engine misfires.

  3. Can I drive my vehicle with the P0185 error code?
    While it is possible to drive your vehicle with the P0185 error code, it is not recommended. This error code can cause decreased fuel efficiency and engine misfires, which can lead to increased wear and tear on the engine.

  4. How do I fix the P0185 error code?
    The P0185 error code can be fixed by replacing the fuel temperature sensor, repairing damaged wiring, or replacing the ECM.

  5. Can I diagnose and repair the P0185 error code myself?
    While it is possible to diagnose the P0185 error code yourself using an OBD-II scanner, repairing the underlying issue should be left to a qualified mechanic. They have the tools and expertise necessary to properly diagnose and repair the issue.