Fuel Tank Pressure Sensor: Warranty And Replacement Guide

A fuel tank pressure sensor is a crucial component of a vehicle's evaporative emissions control system. It monitors the pressure inside the fuel tank to identify leaks, detect defective gas caps, and ensure the system's proper operation. While the sensor has been re-engineered for durability, it can eventually fail due to standard wear and tear, environmental stressors, or debris strikes. Replacement costs can range from $180 to $400, with parts priced between $30 and $150, and labour costs varying from $150 to $250. In some cases, the sensor may be covered under a drivetrain warranty, but this depends on the vehicle manufacturer's specific warranty terms and conditions.

Fuel tank pressure sensor replacement cost

The cost of replacing a fuel tank pressure sensor can vary depending on the vehicle and location. The average cost is estimated to be between $250 and $400, with parts costing between $100 and $150 and labour costing between $150 and $250.

However, some sources give a more specific range of $265 to $304 for the total replacement cost, with parts costing between $126 and $128 and labour costing between $139 and $176. Another source gives a slightly higher range of $295 to $331 for the total replacement cost, with parts costing around $158 and labour costing between $138 and $173.

It is important to note that these estimates do not include taxes and fees and may not be applicable to your unique location. Related repairs may also be needed, which can increase the overall cost.

Additionally, it is recommended to consult a professional technician for fuel tank pressure sensor issues due to the risk of fire and the potential difficulty of diagnosis.

Signs of a bad fuel tank pressure sensor

The fuel tank pressure sensor is a crucial component in keeping your vehicle's emissions in check. This small device monitors the pressure inside your vehicle's fuel tank, playing a vital role in reducing harmful emissions and ensuring your car performs at its best. Here are some signs that your fuel tank pressure sensor is faulty:

Check Engine Light Comes On

When a fuel tank pressure sensor malfunctions, one or more diagnostic fault codes are typically stored. When such codes are detected, a vehicle's check engine light will be illuminated. DTCs P0442, P0452, P0453, P0454, and P0455 are trouble codes that could signify a faulty fuel tank pressure sensor.

Loss of Fuel Economy

A faulty fuel tank pressure sensor may fail to detect leaks within the system, allowing fuel vapors to escape into the atmosphere rather than being properly contained. This will decrease your fuel efficiency, wasting valuable fuel and increasing fuel consumption.

Noticeable Fuel Odor

You might notice a rich fuel odor being emitted from your vehicle in the event that your fuel tank pressure sensor fails. This is quite common and is a hallmark of evaporative emissions system-related issues.

Stalling or Hesitancy Under Acceleration

Although somewhat rare, it is possible for a vehicle to begin stalling intermittently or experiencing hesitation when you accelerate if the fuel tank pressure sensor fails. You might also notice that your vehicle becomes noticeably more difficult to start.

Lack of Power

Another rare yet possible symptom of a faulty fuel tank pressure sensor is a general lack of engine power. This tends to be especially pronounced during periods of heavy acceleration. Under such circumstances, a vehicle will feel inherently sluggish.

Fuel tank pressure sensor vs fuel rail pressure sensor

A fuel tank pressure sensor and a fuel rail pressure sensor are completely different components. A vehicle's fuel tank pressure sensor is part of the evaporative emissions system and provides feedback on the overall pressure of a vehicle's fuel tank. On the other hand, a vehicle's fuel rail pressure sensor is a critical component of the fuel system, providing constant feedback on the presence and pressure of the fuel in the engine's fuel rail. This feedback represents the fuel available to the fuel injectors of each respective cylinder.

The fuel rail pressure sensor is responsible for monitoring the pressure of the fuel in the fuel injectors. If the sensor is not working properly, it can cause the engine to run erratically or even stall. A faulty fuel rail pressure sensor can also cause the "Check Engine" warning light to illuminate on your dashboard.

A vehicle's fuel rail pressure sensor is an electronic device that consists of a semiconductor and an electric circuit. It measures the force applied by the fuel passing through it, and the fuel pressure causes alterations in the semiconductor's resistance, which the sensor's integrated circuit converts into a digital signal for the PCM (powertrain control module).

A faulty fuel rail pressure sensor can cause various issues, including:

• Engine start problems
• Poor engine performance
• Bad fuel economy
• Engine misfires and runs rough

Fuel tank pressure sensor location

The fuel tank pressure sensor is typically located on top of the fuel pump module, which is either mounted on top of or inside the fuel tank. The sensor is part of the evaporative emissions system (EVAP) and is designed to monitor pressure to detect leaks and loose or faulty gas caps.

In a Honda Ridgeline, the FTP sensor is located on the evap canister. For a 2015 Ford F150, the sensor is located on top of the fuel tank.

If you are experiencing issues with your fuel tank pressure sensor, it is recommended to consult a mechanic or a professional for assistance.

Fuel tank pressure sensor failure causes

Fuel tank pressure sensors are designed to last for thousands of miles, but they can fail from time to time. Here are some common causes of fuel tank pressure sensor failure:

Extreme Conditions

Overexposure to extreme temperatures, poor weather conditions, rough roads, vibration, or corrosive fuel vapors can wear down the sensor over time.

Overfilling the Fuel Tank

If you fill your fuel tank too much, the excess fuel can spill into the charcoal canister and other lines, potentially damaging the sensor.

Improper Installation or Maintenance

If the sensor isn’t installed or maintained correctly, it might not work properly or could break sooner than expected.

Regular Use and Age

Just like any other component in your car, the sensor can wear out over time from regular use and age.

Clogging

Dirt, debris, or leftover fuel can clog the sensor, affecting its ability to perform its job properly.

Evap Leak

An evap leak is a small leak in the evaporative emissions system, which allows fuel vapors to escape. This can trigger the tank pressure sensor, as the sensor will detect a change in pressure or a problem with the fuel system.

When the fuel tank pressure sensor fails, it can cause a range of issues, including an illuminated check engine light, decreased fuel efficiency, difficulty starting the engine, and stalling. It is important to have a qualified mechanic diagnose the vehicle to identify the underlying cause of any problems.

Frequently asked questions