Skip the auto shop - Our mechanics make house calls

Q: Tire pressure sensors are on the fritz

asked by on

The tire pressure sensors were super useful for the first 20,000 miles I had my 2007 Chevrolet Impala, but now they don’t really work. I am at 45,000 miles and I have had the light reset and the sensors fixed twice and now the light just turns on and off as it pleases. I am not very happy with this, obviously, but it is far from a devastating problem. Will this prevent my car from passing a state-required inspection?

The tire pressure monitor on your vehicle can detect variations along with low tire pressures. In order to fully check your system you could check your light function. If the light comes on and stays on then you have a low tire pressure condition. If light comes on and stays on then goes out after driving awhile then you have a low tire that when heated up from driving gets into the normal range. If the light comes on and blinks then this indicates the system is having a fault and cannot communicate with sensors. If you are having low tire pressure issues you should have the rims checked for problems with the tire seating area for damage or corrosion or a tire for leaking from damaged bead area or other leakage. If you are having communication issues with sensors then you may have a problem with the radio antenna that doubles as a receiver from the sensors. A diagnostics of the sensors and antenna can be done by certified mechanic, such as one from YourMechanic, to determine if it a bad sensor or the antenna receiver. The scan of the body control module will determine the, if any, repairs needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Ignition switch not working

It sounds like you have used up all the borrowed time from a failing part. The ignition cylinder switch assembly will likely need replaced, especially if all keys to the vehicle have the same problem.A qualified technician, such as one...

Q: Door not opening

You didn't say whether the problem is with the mechanical portion of the door, or the electronics. Electronic door locks may fail as a result of a bad actuator, switch, or wiring problem. However, Cobalts like yours are known for...

Q: Serpentine belt and radiator issues...

You can use regular water to flush out the old coolant and then drain the water and repeat until the water comes out as clean as when you put it in. Then refill with 50/50 coolant mix. Fir the belt...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.