Q: Pressure monitoring system comes on eventhough air pressure in tires is normal

asked by on

The Tire Pressure Monitoring System Light, warning about my tire pressure, has been continually lighting up. The dealership said they fixed it, but the light still comes on. What will solve this problem?

There are many potential causes for this. If the light stays on continuously, the tire pressure may not be set correctly or the system may need to be reset.

Changes in ambient temperature can also affect TPMS operation, since tire pressure drops in cold weather.

If both the low tire pressure and TPMS indicators are illuminated, then the Engine Control Module (ECM), or Electrical Control Unit (ECU), has detected a problem with the system. In this case, the diagnostic trouble codes (DTCs) should be retrieved to start the diagnostic process.

Anything from a failed sensor to a problem with the control module could cause both lights to be illuminated. I suggest you get a second opinion from someone other than the dealership. YourMechanic is an excellent option to get your trouble codes diagnosed, since we make house calls.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Pressure monitoring system comes on eventhough air pressure in tires is normal

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Warning lights for low pressure come on and stay on. asc/dsc lights inclusive

If tire pressures are set and consistent within 2 psi of one another per axle, and the system will not initialize, then this could be an indication of a faulty pressure sensor or an issue with the TPMS hardware. Some...

Q: My car won't rev pass 3k RPMs except when it is in 5th gear.

Hi. This sounds like the clutch for the transmission is slipping, causing the shifting condition you have. The clutch is what allows you to shift from gear to gear. When this part fails the car may not move, be sluggish...

Q: Does wheel need removed to do brake fluid

With most vehicles, it is not necessary to remove the wheels in order to bleed the brakes. Bleeder screws on brake calipers - or wheel cylinders if drum brake-equipped - can usually be accessed without the wheels being removed. Some...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...