I discovered another reason for the check engine light. On occasion, while driving with no obvious engine problems nor fault symbols on the dashboard diagnostic display, the car would pass over a pothole in the road causing a mechanical shock to both the car and it's ocupants. Simultaneously the check engine light would illuminate on the dash.and remain on thereafter. If I used my OBD2 reader to turn the check engine light off, it would remain off thereafter until the car ran over another pothole or bump in the road, etc.
Thank you for sharing It could be an electrical continuity issue due to vibration from the hole, or it could just be a faulty sensor. Is it only the check engine light or some other light also? What is the code?
Hello everyone, thank you very much for the video howevr it seems my issue is different, im having an issue at idle and many time i get the check engine, the issue that the engine is shaking and there is a lot of vibration on Idle, its very good when its running on the road . i change all spark plugs to irradium and coils as well even all 4 are new, as well i opned the engine air part and cleaned it and changed the 4 joins on the air area upper to the injectors, as well i changed the throttle body to a new one and still the same issue > i used liqui moly products and and changed oil always on time. there is no loss in water/ oil and heating engine is good as well i cleaned many sensors that i can reach and cables using the electronic cleaners however still the same issue please help me guys, its driving me crazy... thanks ( clio 3 1,4 petrol 2007 )
My new toyota corolla cross with 3km odometer has engine light on when I started the engine message appeared "engine is not ready to run" ....IDK why😮😢... I just turned off then restarted the car as if nothing happened (no message second time)
Good to hear you get it back. I have also seen this cross issue with someone else few months ago. I don’t know, I assume it is related to safety system like seatbelt, depressing the clutch or pedal while starting, weather issue….
@@ArrowGearhead definitely the OBD two scan tool. So far no other symptoms at all that’s a good thing, but it’s very puzzling but the scan to absolutely help a lot. Thanks for answering!
@@ArrowGearhead the 2 ground n studs back of 5.3 GMC on passenger side that ground wire is brake n where it's connected to it at an can't remember code but it was knock sensor o ya I do show po300 randem misfire to sorry bout that.
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I discovered another reason for the check engine light. On occasion, while driving with no obvious engine problems nor fault symbols on the dashboard diagnostic display, the car would pass over a pothole in the road causing a mechanical shock to both the car and it's ocupants. Simultaneously the check engine light would illuminate on the dash.and remain on thereafter. If I used my OBD2 reader to turn the check engine light off, it would remain off thereafter until the car ran over another pothole or bump in the road, etc.
Thank you for sharing
It could be an electrical continuity issue due to vibration from the hole, or it could just be a faulty sensor.
Is it only the check engine light or some other light also? What is the code?
Hello everyone, thank you very much for the video howevr it seems my issue is different, im having an issue at idle and many time i get the check engine,
the issue that the engine is shaking and there is a lot of vibration on Idle, its very good when its running on the road .
i change all spark plugs to irradium and coils as well even all 4 are new, as well i opned the engine air part and cleaned it and changed the 4 joins on the air area upper to the injectors, as well i changed the throttle body to a new one and still the same issue >
i used liqui moly products and and changed oil always on time.
there is no loss in water/ oil and heating engine is good as well i cleaned many sensors that i can reach and cables using the electronic cleaners however still the same issue please help me guys, its driving me crazy...
thanks ( clio 3 1,4 petrol 2007 )
My new toyota corolla cross with 3km odometer has engine light on when I started the engine message appeared "engine is not ready to run" ....IDK why😮😢... I just turned off then restarted the car as if nothing happened (no message second time)
Good to hear you get it back. I have also seen this cross issue with someone else few months ago. I don’t know, I assume it is related to safety system like seatbelt, depressing the clutch or pedal while starting, weather issue….
bad fuel, or fuel quality and requirements.
right
Mine says check emissions system. It’s not the fuel cap for sure. So I’m not sure what else it could be besides probably a faulty sensor.
Watch for also for another symptom along with the check engine light. And, consider using OBD2 scan tool
@@ArrowGearhead definitely the OBD two scan tool. So far no other symptoms at all that’s a good thing, but it’s very puzzling but the scan to absolutely help a lot. Thanks for answering!
Why does my check engine light strate flashing when I give it all the gas ,( floor it)
@shrimp8004 would it be a misfire?
What other symptoms do you see?
@@ArrowGearhead the 2 ground n studs back of 5.3 GMC on passenger side that ground wire is brake n where it's connected to it at an can't remember code but it was knock sensor o ya I do show po300 randem misfire to sorry bout that.