Skip the auto shop - Our mechanics make house calls

Q: my air temperature sensor have my check engine light on i change the senser but the code po111 still come back after I drive

asked by on

Is there any other problems that makes the check engine light come back on after a few mile

My car has 99237 miles.
My car has an automatic transmission.

A: Hi there. The computer looks at three senso...

Hi there. The computer looks at three sensors and compares them when you start the vehicle. It looks at the intake air, ambient air and engine coolant sensors to see if they read the same when you first start the vehicle. If one is out of specification, then the Check Engine Light is turned on. The three sensors need to be checked at the same time before the engine is started to see which one is not reading correctly. I recommend you have a certified technician, like one from YourMechanic, test the sensors and inspect the Check Engine Light to see what exactly is causing your issue.

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: Security feature not letting car start

There are a couple of TSB's for the wireless control module to be reprogrammed or replaced. Both of these items would have to be done at a dealer who has the equipment and software to read codes, and flash the...

Q: i beleve i hear grinding from my drivers side front wheel. i can only drive 60mph before my vehicle starts to drive rough.

Hey there, thanks for writing in. This is most likely a bad wheel bearing. When a wheel bearing is bad or worn out, it will make this type of grinding sound. If you need to have this repair done, consider...

Q: I had my crank sensor and cam sensor changed last March, supposedly it went out in August and was changed again.

Hi, we will be happy to help how we can. Your vehicle should not have been handled like that. I can't imagine the level of stress you've been enduring. A faulty computer will not cause a timing chain to go...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...