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P0453 2014 GMC Sierra Code - Fuel Tank Pressure Sensor Circuit High Voltage

Quick Answer

The P0453 diagnostic trouble code (DTC) indicates that the Engine Control Module (ECM) has detected a high voltage condition in the fuel tank pressure sensor circuit. Common causes include Faulty fuel tank pressure sensor that is providing incorrect voltage readings, Damaged wiring or connectors in the fuel tank pressure sensor circuit, leading to shorts or open circuits, Issues with the Engine Control Module (ECM) that may misinterpret sensor signals. 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
P0453 2014 GMC Sierra indicates Fuel Tank Pressure Sensor Circuit High Voltage .
Common causes
Common causes include Faulty fuel tank pressure sensor that is providing incorrect voltage readings, Damaged wiring or connectors in the fuel tank pressure sensor circuit, leading to shorts or open circuits, Issues with the Engine Control Module (ECM) that may misinterpret sensor signals.
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 08, 2024
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Code P0453 2014 GMC Sierra Description

The P0453 diagnostic trouble code (DTC) indicates that the Engine Control Module (ECM) has detected a high voltage condition in the fuel tank pressure sensor circuit. The fuel tank pressure sensor is integral to the vehicle's evaporative emissions control system (EVAP), which is designed to prevent fuel vapors from escaping into the atmosphere. This sensor monitors the pressure inside the fuel tank and communicates this information to the ECM, which uses it to manage fuel vapor recovery and ensure optimal engine performance.

OBDII Code P0453 2014 GMC Sierra - Fuel Tank Pressure Sensor Circuit High Voltage
P0453 2014 GMC Sierra Code - Fuel Tank Pressure Sensor Circuit High Voltage

Common Causes of P0453 2014 GMC Sierra

  1. Faulty fuel tank pressure sensor that is providing incorrect voltage readings.
  2. Damaged wiring or connectors in the fuel tank pressure sensor circuit, leading to shorts or open circuits.
  3. Issues with the Engine Control Module (ECM) that may misinterpret sensor signals.
  4. Blocked or malfunctioning EVAP system components, such as the charcoal canister or purge valve.
  5. Fuel tank overpressure due to a malfunctioning fuel cap or other related components.

Symptoms of P0453 2014 GMC Sierra

  1. Check Engine Light illuminated on the dashboard.
  2. Decreased fuel efficiency, leading to more frequent refueling.
  3. Rough idling or stalling during operation.
  4. Difficulty starting the engine or prolonged cranking.
  5. Failed emissions test due to elevated emissions levels.

How to Fix P0453 2014 GMC Sierra

  1. Diagnostic Testing: Begin by using an OBD-II scanner to confirm the P0453 code and check for any additional codes that may provide more context.
  2. Visual Inspection: Inspect the wiring and connectors associated with the fuel tank pressure sensor for any signs of damage, corrosion, or loose connections.
  3. Sensor Replacement: If the fuel tank pressure sensor is determined to be faulty, replace it with a new, OEM-quality part to ensure proper function.
  4. Wiring Repair: If damaged wiring is found, repair or replace the affected sections to restore proper circuit integrity.
  5. System Testing: After repairs, clear the codes and perform a test drive to ensure that the check engine light does not reappear and that the vehicle operates normally.

Cost to Fix P0453 2014 GMC Sierra

The typical repair costs for addressing a P0453 code can range from $150 to $600, depending on the specific issue identified. This estimate includes parts, such as a new fuel tank pressure sensor (which can cost between $50 and $200) and labor costs, which generally range from $80 to $150 per hour. The total labor time for diagnostics and repairs may take between 1 to 3 hours. It's important to note that labor rates can vary significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often charge less. For a more precise estimate, it's advisable to check local rates and obtain quotes from multiple repair shops.

What does this mean?

Tech Notes for P0453 2014 GMC Sierra









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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 P0453 2014 GMC Sierra Code

1. What does the OBDII code P0453 mean on a 2014 GMC Sierra?

P0453 indicates that the fuel tank pressure (FTP) sensor circuit is reading a voltage higher than expected, suggesting an issue with the sensor or related components.

2. What are the common symptoms of code P0453 on a 2014 GMC Sierra?

Common symptoms include an illuminated check engine light, reduced fuel efficiency, difficulty refueling, or the EVAP system failing readiness tests during emissions testing.

3. What causes code P0453 on a 2014 GMC Sierra?

Possible causes include a faulty fuel tank pressure sensor, damaged or corroded wiring, a poor electrical connection, or a problem with the EVAP system components.

4. Can I drive my 2014 GMC Sierra with a P0453 code?

Yes, you can likely drive the vehicle, but ignoring the issue may result in decreased fuel efficiency and potential emissions problems. It’s best to address the code promptly.

5. How do I diagnose code P0453 on a 2014 GMC Sierra?

Start by inspecting the fuel tank pressure sensor and its wiring for damage or corrosion. Use a multimeter to check sensor voltage and scan for additional EVAP system codes.

6. How do I fix the P0453 code on a 2014 GMC Sierra?

Repairs may include replacing a faulty fuel tank pressure sensor, repairing or replacing damaged wiring, or cleaning corroded connectors in the circuit.

7. How much does it cost to fix a P0453 code on a 2014 GMC Sierra?

The cost depends on the underlying issue. Replacing the fuel tank pressure sensor can range from $100 to $300, including parts and labor.

8. Can a loose gas cap cause the P0453 code on a 2014 GMC Sierra?

No, a loose gas cap typically triggers codes like P0455 or P0457, not P0453. However, inspecting the gas cap is still a good practice when diagnosing EVAP-related issues.

9. What tools are needed to fix a P0453 code on a 2014 GMC Sierra?

You’ll need an OBDII scanner, a multimeter, and basic hand tools for inspecting and repairing the fuel tank pressure sensor and its wiring.

10. Will clearing the P0453 code fix the problem on a 2014 GMC Sierra?

Clearing the code will turn off the check engine light temporarily, but the issue will reappear if the underlying problem isn’t resolved.

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