Skip the auto shop - Our mechanics make house calls

Q: Check engine sign on

asked by on

Check engine sign ON. I replaced Mass airflow sensor . Sign still on. Error codes show heated oxygen sensor bay 1 and bay 2.( voltage low )

What should I do ?

My car has 200000 miles.
My car has a manual transmission.

A: Most Check Engine Lights are illuminated wh...

Most Check Engine Lights are illuminated when an error code is triggered and stored in the ECM. Even if you’ve repaired what was broken or damaged, you still need to clear those codes in order for the light to go away. If you have a professional digital scanner you can complete this on your own. Otherwise, you might need to contact a local mechanic, like one of our professionals at YourMechanic to complete this service for you.

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

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: Power seat not moving forwards or backwards

Hi. The power seat has different motors that control the seat's movement. One moves the seat forward and back, another up and down, and another for tilting. All the motors work separately but connect to the same switch. The switch...

Q: Engine makes slight noise and shakes when idle in park or at red light

Shaking can occur for several reasons, but most commonly is a sign of the engine misfiring. You may end up having to test the fuel, spark, and air intake systems. Start by scanning the vehicle for diagnostic troubleshooting codes (done...

Q: Rough idle and stalling with exhaust popping

The first thing to do is to get rid of the oil type air filter. This oil bath type filter can cause the mass air flow to be contaminated with the oil from the filter you are using. You should...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...