Q: Damaged ambient air temperature sensor

asked by on

Will the damaged sensor affect RPM's? Will it affect car's performance?

My car has 13000 miles.
My car has an automatic transmission.

The short answer is yes, but only slightly. The ambient air temperature sensor provides information for the engine management system to make the correct fuel air mixture for the local temperature. If the sensor is damaged, it usually causes a high voltage signal that tells the ECU that it is really cold outside, like below zero cold. The ECU will enrich the mixture to compensate for the extreme cold, so unless you’re driving in ten below zero weather, the fuel quantity will not be correct, but when the car warms up, another compensation takes place in response to the oxygen sensor and the fuel quantity is mostly corrected. There will just be a slight alteration in the range of the mixture.

If the ECU recognizes that the sensor is damaged, it will substitute a value for the faulty sensor, one for air at about 70 degrees and illuminate the Check Engine Light. If that is the case, you will probably not notice any difference in performance at all. If your car is performing badly and not revving as it should, your problems probably go deeper than an ambient air temp sensor. By contacting YourMechanic, you can have a technician come to your home and determine why the car is slow to accelerate and recommend a fix.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Damaged ambient air temperature sensor

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: Is there a crankshaft sensor and a crankshaft position sensor

Hi Future. Thanks for the follow-up. Yes, there is a camshaft position sensor, located at the top of the engine near the bottom of the cylinder head and the crankshaft sensor, that is located near the crank pulley. I think...

Q: Ambient temperature is going high when ever I'm in heavy traffic

Hello. The ambient air temperature is the engine sensor that detects the temperature of the air around the engine and vehicle. If it is coming up as reading high then that may be a sign that the engine is running...

Q: Interior lights of 2005 Passat stopped working, what do I do??

It is possible that there could be an issue with the switch. I would recommend enlisting in the assistance of a qualified professional to test the switch for proper function. If the interior light switch is not performing properly I...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.