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P0183 2014 GMC Sierra Code - Fuel Temperature Sensor Circuit High Voltage

Quick Answer

The P0183 diagnostic trouble code (DTC) indicates that the fuel temperature sensor circuit is reporting a high voltage condition. Common causes include Faulty Fuel Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect voltage readings, Wiring Issues: Damaged or corroded wiring or connectors in the fuel temperature sensor circuit can lead to high voltage signals, ECM Malfunction: A failure in the Engine Control Module can misinterpret sensor signals, leading to erroneous codes. 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 2014 GMC Sierra indicates Fuel Temperature Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Fuel Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect voltage readings, Wiring Issues: Damaged or corroded wiring or connectors in the fuel temperature sensor circuit can lead to high voltage signals, ECM Malfunction: A failure in the Engine Control Module can misinterpret sensor signals, leading to erroneous codes.
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 Oct 02, 2024
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Code P0183 2014 GMC Sierra Description

The P0183 diagnostic trouble code (DTC) indicates that the fuel temperature sensor circuit is reporting a high voltage condition. This sensor is crucial for monitoring the temperature of the fuel as it flows through the fuel system. The Engine Control Module (ECM) uses this data to optimize fuel delivery and engine performance. When the fuel temperature sensor detects a voltage that exceeds the manufacturer's specified range, it triggers the P0183 code.

OBDII Code P0183 2014 GMC Sierra - Fuel Temperature Sensor Circuit High Voltage
P0183 2014 GMC Sierra Code - Fuel Temperature Sensor Circuit High Voltage

Common Causes of P0183 2014 GMC Sierra

  1. Faulty Fuel Temperature Sensor: The sensor itself may be malfunctioning and providing incorrect voltage readings.
  2. Wiring Issues: Damaged or corroded wiring or connectors in the fuel temperature sensor circuit can lead to high voltage signals.
  3. ECM Malfunction: A failure in the Engine Control Module can misinterpret sensor signals, leading to erroneous codes.
  4. Short Circuit: A short circuit in the wiring harness can cause excessive voltage to be sent to the ECM.
  5. Poor Ground Connection: An inadequate ground connection can lead to voltage fluctuations in the sensor circuit.

Symptoms of P0183 2014 GMC Sierra

  1. Check Engine Light: The most common symptom is the illumination of the check engine light on the dashboard.
  2. Poor Fuel Economy: Drivers may notice a decrease in fuel efficiency due to improper fuel mixture adjustments.
  3. Engine Performance Issues: Symptoms such as rough idling, stalling, or hesitation during acceleration may occur.
  4. Increased Emissions: The vehicle may fail emissions tests due to improper fuel combustion.
  5. Difficulty Starting: In some cases, the vehicle may have trouble starting or may not start at all.

How to Fix P0183 2014 GMC Sierra

  1. Diagnostic Scan: Begin with a thorough diagnostic scan to confirm the P0183 code and check for any related codes.
  2. Visual Inspection: Inspect the wiring and connectors associated with the fuel temperature sensor for signs of damage, corrosion, or loose connections.
  3. Sensor Testing: Test the fuel temperature sensor using a multimeter to check its resistance and voltage output against manufacturer specifications.
  4. Repair or Replace Components: If the sensor is faulty, replace it. If wiring issues are found, repair or replace the damaged sections.
  5. Clear Codes and Test Drive: After repairs, clear the DTCs and take the vehicle for a test drive to ensure the issue is resolved and the check engine light does not reappear.

Cost to Fix P0183 2014 GMC Sierra

The cost to repair a P0183 code can vary significantly based on the specific issue identified. On average, replacing a fuel temperature sensor may cost between $100 and $300, including parts and labor. If wiring repairs are necessary, costs could rise to $200 to $500 or more, depending on the extent of the damage.

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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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