Best Answer

I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?

User Avatar

Wiki User

โˆ™ 2010-06-23 23:34:49
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: What do you do if the check engine light comes back on after replacing the speed sensor?
Write your answer...
Still have questions?
magnify glass
Related questions

How often does an oxygen sensor need to be changed?

Your O2 sensor is a "part that is designed to wear out". there is no standard on replacing them, but if your car is running fine, and your check engine light comes on, and stays on, it's probably an O2 sensor.

If engine is damaged will check engine come on?

Check engine light will come on for various reasons. The o2 sensors could be one of them. If your belt breaks the light will come on and the engine will over heat. I mentioned the o2 sensor because when it comes on for this reason some people have had that light on for years without replacing the sensor.

What does it mean when your check engine light comes on it reads heated oxygen sensor bank?

There is a failure in the oxygen sensor heater.

Would replacing an exhaust cause the check engine light to come on?

Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.

Why does my 02 kia stop when the service engine soon light comes on?

check the crank sensor

Why does your check engine light comes on only on the highway 1986 Buick Wagon?

the sensor is going out

Engine check light comes on and computer reads knock sensor?

You need to test/replace the knock sensor. ireplaced it already.

Check engine 2001 Isuzu Rodeo?

The check engine light for the 2001 Isuzu Rodeo often comes on because of a sensor that is damaged or malfunctioning. The most common sensor is an oxygen sensor and when reset, this often allows the light to be reset.

What does it mean when the check engine light comes on in a 1997 Honda Passport and there is also a smell like something is burning?

Normally, the light on means the oxygen sensor (s) need replacing. As for the smell, be more specific.

How do you know when the oxygen sensor on a 19900 Toyota Camry is bad?

Engine check light comes on, and you have the codes read.

What would cause this 88 F150 4.9L check engine light comes on when accelerator is let off goes off when accelerator is depressed?

Without pulling codes, I would quess the Oxygen sensor is weak and needs replacing.

Car check engine sign?

If check engine soon comes on it means you may have a computer sensor telling you something is wrong. You should get a code readout ASAP. Mine let me down and it was a mass air flow sensor the problem.

People also asked