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Fuel Tank Pressure Sensor Replacement

Fuel Tank Pressure Sensor Replacement Cost

The average cost for a Fuel Tank Pressure Sensor Replacement is between $259 and $319. Labor costs are estimated between $193 and $245 while parts are priced between $66 and $74. Estimate does not include taxes and fees.

How Much Does a Fuel Tank Pressure Sensor Replacement Cost?

Fuel Tank Pressure Sensor Replacement Service and Cost

What is a fuel tank pressure sensor?

The fuel tank pressure sensor helps control fuel vapor emissions by alerting the vehicle's computer if pressure has dropped.

How does the fuel tank pressure sensor work?

The fuel tank pressure sensor constantly reads pressure in the fuel tank, and is essential in testing the evaporative emissions (EVAP) system for leaks. The vehicle's computer is programed to expect a certain range of pressure in the fuel tank during specific events. If the fuel tank pressure sensor reports pressures that are unexpected, the computer is programed to signal this fault with the check engine light.

What are the symptoms related to a bad fuel tank pressure sensor?

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. When the fuel tank pressure sensor fails, typical starting and rough idle issues do not exist because the system is operating as normal.

Can I drive with a fuel tank pressure sensor problem?

A vehicle with an EVAP system issue can be driven, but may achieve lower fuel mileage. Also, a vehicle with an EVAP system issue will not pass standardized state or federal emission testing. The vehicle may take time to start and idle rough, but driving the vehicle should not be an issue.

How often do fuel tank pressure sensors need to be replaced?

EVAP system faults are very common, and happen throughout the useful life of the vehicle. The fuel tank pressure system, and all other components in the system are linked to the same trouble codes, so all components are inspected when the system has a fault. This includes the filler cap, a.k.a. gas cap. The gas cap is the number one reason EVAP failures are recorded. These codes are preventable with regular cleaning and inspection of the fuel cap.

Fuel Tank Pressure Sensor Replacement Repair Information

How are fuel tank pressure sensor issues diagnosed?

When the EVAP system is checked, the purge valve and vent valve are closed, and the pressure is monitored by the fuel pressure sensor. If that pressure drops with both valves closed, there is a leak in the EVAP system. If pressure holds properly, the system passes, and will continue to prevent vapor emissions. The sensor is also used in testing vent valve and purge valve operation. When the valves are open, the pressure sensor reads the fuel tank pressure, and must sense a drop in pressure. If not, the purge valve or vent valve may be faulty.

How is a fuel tank pressure sensor replaced?

When the identified component is faulty, the technician will remove all electrical and vacuum connectors, clean the mating surface for the faulty part, and install a new part. The evap system will then be allowed to run self-diagnostics to test the repair. If additional leaks are present, or other components have failed, the test will fail, and the process will restart. To help prevent issues with the EVAP system, especially the charcoal canister, avoid overfilling or topping off the fuel tank.

RepairPal Recommendations for fuel tank pressure sensor issues

To help prevent issues with the EVAP system, especially the charcoal canister, avoid overfilling or topping off the fuel tank. When the tank is topped off, the charcoal canister may fill with fuel, causing system failure, and degradation of the charcoal canister.

What to look out for when dealing with fuel tank pressure sensor issues

Many people like to remove EVAP components, but there is nothing to benefit from removal. The system is there to prevent harmful emissions, and increase fuel mileage in the process. When working with fuel, the battery should always be disconnected, and proper precautions taken against fire hazards.

Can I replace the fuel tank pressure sensor myself?

The EVAP system is best serviced by an experienced DIYer, or a professional technician. Repairing the EVAP system can be a struggle, but with proper understanding the job becomes enjoyable. The biggest mistake is to being changing parts based on hunches and misdiagnosis. That is where this job becomes more expensive than bringing the problem to a professional.

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