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P0183 Subaru Code - Fuel Temperature Sensor 'A' Circuit High Input

Quick Answer

The P0183 Subaru code indicates that there is a high input signal coming from the fuel temperature sensor 'A'. Common causes include Faulty fuel temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector. 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
P0183 Subaru indicates Fuel Temperature Sensor 'A' Circuit High Input.
Common causes
Common causes include Faulty fuel temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0183 Subaru Description

The P0183 Subaru code indicates that there is a high input signal coming from the fuel temperature sensor 'A'. The fuel temperature sensor is responsible for monitoring the temperature of the fuel in the vehicle's fuel tank. This information is crucial for the engine control module (ECM) to adjust the air-fuel mixture accordingly for optimal combustion. When the sensor detects a high input signal, it means that the temperature reading is higher than the expected range.

OBDII Code P0183 Subaru - Fuel Temperature Sensor 'A' Circuit High Input
P0183 Subaru Code - Fuel Temperature Sensor 'A' Circuit High Input

Common Causes of P0183 Subaru

  1. Faulty fuel temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connector
  4. Malfunctioning ECM
  5. Fuel contamination affecting sensor readings

Symptoms of P0183 Subaru

  1. Check engine light illuminated
  2. Decreased fuel efficiency
  3. Engine running rough or stalling
  4. Difficulty starting the engine
  5. Increased emissions

How to Fix P0183 Subaru

  1. Use an OBD-II scanner to retrieve the trouble code and confirm the issue.
  2. Inspect the wiring and connectors in the fuel temperature sensor circuit for any damage or corrosion.
  3. Test the fuel temperature sensor using a multimeter to check for proper resistance values.
  4. Replace the fuel temperature sensor if it is found to be faulty.
  5. Clear the trouble code with the OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0183 Subaru

The cost of repairing a P0183 Subaru code can vary depending on the specific cause of the issue. In general, the price range for this repair can be between $100 to $300, including parts and labor. However, it is essential to note that labor rates and part prices can vary significantly based on the location, vehicle make and model, and the shop's hourly rates. It is recommended to consult with a trusted auto repair shop to get an accurate estimate for this repair.

When is the Code Detected?

An excessively high voltage from the sensor is sent to ECM.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0183 Subaru Code

1. What are the common symptoms of OBDII code P0183 in a Subaru related to the Fuel Temperature Sensor 'A' Circuit High Input?

The common symptoms include issues with fuel efficiency, rough idling, stalling, or even difficulty starting the vehicle.

2. What are the possible causes of OBDII code P0183 in a Subaru?

Possible causes include a faulty fuel temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the Engine Control Module (ECM).

3. How can I diagnose the Fuel Temperature Sensor 'A' Circuit High Input issue in my Subaru?

You can use a multimeter to test the fuel temperature sensor for resistance, check the sensor wiring for any damage, and inspect the connectors for corrosion or loose connections.

4. Can a DIY enthusiast repair the Fuel Temperature Sensor 'A' Circuit High Input problem in a Subaru?

Depending on your experience and tools, you may be able to replace the fuel temperature sensor yourself. However, if you are unsure, it's recommended to consult a professional mechanic.

5. How important is it to fix OBDII code P0183 in a Subaru promptly?

It is essential to address this issue promptly as it can lead to poor engine performance, decreased fuel efficiency, and potential long-term damage to the engine if left unresolved.

6. Are there any temporary fixes for OBDII code P0183 in a Subaru?

There are no recommended temporary fixes for this issue. It's best to address the root cause of the problem to ensure the proper functioning of the fuel temperature sensor.

7. Can a faulty fuel temperature sensor cause other problems in a Subaru?

Yes, a faulty fuel temperature sensor can cause a variety of issues, including incorrect fuel mixture, reduced engine performance, and potential damage to other engine components.

8. How much does it typically cost to repair OBDII code P0183 in a Subaru?

The cost of repairing this issue can vary depending on the root cause of the problem, but it generally ranges from $100 to $300 for parts and labor.

9. Will resetting the OBDII code P0183 in a Subaru make the issue go away?

Resetting the code may temporarily clear the error message, but if the underlying problem is not addressed, the code is likely to reappear once the ECM detects the issue again.

10. How can I prevent OBDII code P0183 from occurring in my Subaru in the future?

Regular maintenance, including checking the fuel temperature sensor and its wiring during routine service intervals, can help prevent this issue from occurring in the future.

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