Engine-CodesGMC – P0183 2018 GMC Sierra

P0183 2018 GMC Sierra Code - Fuel Temperature Sensor Circuit High Voltage

Quick Answer

The P0183 diagnostic trouble code (DTC) specifically indicates that there is a high voltage condition in the fuel temperature sensor circuit of a 2018 GMC Sierra. Common causes include Faulty fuel temperature sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM. 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 2018 GMC Sierra indicates Fuel Temperature Sensor Circuit High Voltage.
Common causes
Common causes include Faulty fuel temperature sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0183 2018 GMC Sierra Description

The P0183 diagnostic trouble code (DTC) specifically indicates that there is a high voltage condition in the fuel temperature sensor circuit of a 2018 GMC Sierra. The fuel temperature sensor is responsible for monitoring the temperature of the fuel in the fuel tank and sending this information to the engine control module (ECM) for fuel management. When the voltage in the circuit is higher than the specified range, the ECM triggers the P0183 code.

OBDII Code P0183 2018 GMC Sierra - Fuel Temperature Sensor Circuit High Voltage
P0183 2018 GMC Sierra Code - Fuel Temperature Sensor Circuit High Voltage

Common Causes of P0183 2018 GMC Sierra

  1. Faulty fuel temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ECM
  4. Issues with the fuel temperature sensor's ground connection
  5. Corrosion or contamination in the sensor circuit

Symptoms of P0183 2018 GMC Sierra

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation during acceleration
  4. Difficulty starting the vehicle
  5. Illumination of the check engine light

How to Fix P0183 2018 GMC Sierra

  1. Begin by conducting a visual inspection of the fuel temperature sensor and its wiring for any visible damage or corrosion.
  2. Use a multimeter to test the resistance and voltage of the fuel temperature sensor to determine if it is functioning correctly.
  3. Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections.
  4. If the sensor is faulty, replace it with a new one and ensure proper installation.
  5. Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0183 2018 GMC Sierra

The typical repair costs for addressing a P0183 code in a 2018 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts. This estimate includes the cost of a new fuel temperature sensor if needed and labor costs. However, it's important to note that actual repair costs can vary based on factors such as location, the auto repair shop's labor rates, and any additional diagnostic or repair work required. It is recommended to consult with a professional mechanic to get a more accurate estimate based on the specific situation.

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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.

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