The check engine light will come on anytime the ECU detects a problem with the emission system. It should also come on when you start the vehicle and stay for a few seconds and then go out.
Check engine light would appear.
The oxygen sensor is one of many things that could turn the check engine light on.The oxygen sensor is one of many things that could turn the check engine light on.
could be a bad crank sensor, it wont always set a code, ive had a few that dont. if you have a scope or scan tool, manually check that the sensor is good.
There is not one sensor. All the ECM sensors are tied to the check engine light.
That is what the check engine light is for. It informs you of a failure.
If it is bad the check engine light will come on and set a code for that particular sensor.
Yes, an unplugged sensor can cause a check engine light.
replace the bad sensor and it will turn off.
How can I check the ENGINE COOLANT TEMPERATURE (ECT) sensor on my 1991 HONDA PRELUDE SI 2.1L
There are sensors all over the engine that can turn the check engine light on.There are sensors all over the engine that can turn the check engine light on.
if you disconnect the o2 sensor cable in the air intake then start the engine you would see the check engine sign turned on in the gauge panel. It is on then the sensor is working if off the the sensor may have problems
The O2 sensor is one of many things that can turn on the check engine light. You need to have it checked for codes.