The message signals a problem with the Tire Pressure Monitoring System (TPMS) or its sensors, not just a low tire warning. It usually means one or more sensors aren’t communicating correctly with the vehicle’s controller.
Understanding TPMS and the fault
The Ford Fusion uses TPMS sensors housed in each wheel to monitor air pressure and report readings to a central control module. A “tire pressure sensor fault” indication typically shows when the system cannot reliably read a sensor or cannot communicate with it. This can happen even if tire pressures appear normal and may stem from hardware or software issues rather than a simple underinflation.
Common causes of TPMS faults in a Ford Fusion include:
- Dead or weak TPMS sensor battery
- Damaged, corroded, or leaking wheel sensors or valve stems
- Faulty TPMS sensors within one or more wheels
- TPMS control module or receiver problems
- Recent tire service (rotation, replacement) without a TPMS relearn
These faults are usually addressed by inspecting sensors, performing necessary relearns, and replacing faulty hardware as needed. If ignored, a persistent fault can lead to no reliable warning about actual tire pressure, which is a safety risk.
What to do next
Follow these steps to diagnose and address a TPMS fault on a Ford Fusion. If you’re unsure, consult a professional to avoid driving with an ineffective TPMS.
- Check all tire pressures with a reliable gauge and inflate each tire to the recommended specification found on the door jamb sticker or in the owner’s manual.
- Inspect tires and valve stems for damage, punctures, or slow leaks; look for corrosion or damage around sensor valves if accessible.
- Drive the vehicle a short distance to see if the system relearns automatically after the tires are at the correct pressure; some models require a manual relearn.
- Use the TPMS relearn procedure if your Fusion requires it (some models need a tool or dealer/service bay procedure to re-sync sensors).
- If the fault persists after a relearn attempt, schedule service with a Ford dealer or qualified tire shop to diagnose sensor health, battery condition, and the TPMS control module; you may need sensor replacement.
Note: Do not ignore a TPMS fault if a tire is visibly underinflated or damaged. Driving on underinflated tires can worsen wear and affect handling and braking.
When to consider replacing TPMS sensors
TPMS sensors have a finite life, typically several years, and their batteries are not easily replaceable. If a sensor is confirmed faulty, the wheel usually needs sensor replacement, which is often done in conjunction with tire service for proper mounting and relearning.
Summary
A Ford Fusion “tire pressure sensor fault” means the TPMS cannot reliably read or communicate with one or more wheel sensors. Start by verifying tire pressures and inspecting tires and valves, then attempt a relearn if your model supports it. If the fault remains, have a professional diagnose the sensors and TPMS module, as it may require sensor replacement or module servicing to restore reliable tire-pressure monitoring.
Can I still drive with a tire pressure sensor fault?
While it's technically possible to drive a car with a bad TPMS sensor valve, it's not advisable for several reasons. Firstly, as outlined above, doing so compromises your safety and that of other road users. Secondly, it can result in increased running costs due to reduced fuel efficiency and accelerated tyre wear.
Does AutoZone fix TPMS sensors?
At AutoZone, we carry replacement TPMS sensors for most makes and models. And if you need help resetting the TPMS light, we can offer helpful advice or refer you to a shop in our professional network.
What causes a Ford tire pressure sensor fault?
As the temperature decreases, the air inside the tire contracts, lowering the pressure inside. Tire pressure sensor faults can also stem from a breach in the tire sidewall or tread caused by a puncture, slash, blowout, or damage sustained after hitting a curb or pothole.
How to fix tire pressure sensor fault on Ford Fusion?
Hold down the TPMS reset button until the light blinks three times, then let go. Start the car and give the vehicle about 20 minutes for the sensor to reset. Generally, you'll find the reset button under the steering wheel.