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What Is The Problem With My CHECK ENGINE LIGHT?? - Car Talk - Nairaland

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What Is The Problem With My CHECK ENGINE LIGHT?? by lonelydora: 6:53am On Aug 13, 2014
Hello house,
I have changed my O2 sensor Bank 1 Sensor 2 (which is the only code my car pulled up) thrice with brand new ones, but the CEL comes ON sometimes and goes OFF again. What could be the cause of this coming on and off of the CEL? I have thoroughly scanned the car and it keeps pulling only the O2 code.
Car is 2003 Honda Accord EX-L V6. Three years running and no major repairs. Just routine maintenance. That's the car in the pix

Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Nazcoj(m): 6:57am On Aug 13, 2014
Its normal. My Corolla does that. It starts immediately a Nigerian Mechanic operates on a new car and it wil continue to bleep so until u visit d Car's service centre
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by magnumx: 7:08am On Aug 13, 2014
currently experiencing this issue with my camry 2001 too, maybe a scan would assist though most comments i came across online suggested the O2 sensors or catalysts

UPDATE: The issue has been resolved after I changed the Engine and Transmission oil
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by autofixng: 7:29am On Aug 13, 2014
With a check engine light on, the best you can do is to run a scan to know what exactly is wrong.
Do not allow guess work on your vehicle and also don't let your mechanical tells you the light is normal as your car still move.

Re: What Is The Problem With My CHECK ENGINE LIGHT?? by GAZZUZZ(m): 7:31am On Aug 13, 2014
lonelydora: Hello house,
I have changed my O2 sensor Bank 1 Sensor 2 (which is the only code my car pulled up) thrice with brand new ones, but the CEL comes ON sometimes and goes OFF again. What could be the cause of this coming on and off of the CEL?

Make of vehicle:
Engine type:
Repair history:
Run another scan.
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by iamSi(m): 7:32am On Aug 13, 2014
Bro it is very abnormal ...
Nazcoj: Its normal. My Corolla does that. It starts immediately a Nigerian Mechanic operates on a new car and it wil continue to bleep so until u visit d Car's service centre
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Bossmd: 7:33am On Aug 13, 2014
autofixng: With a check engine light on, the best you can do is to run a scan to know what exactly is wrong.
Do not allow guess work on your vehicle and also don't let your mechanical tells you the light is normal as your car still move.

How do you scan the vehicle?
What are the required tools needed?
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Nobody: 8:48am On Aug 13, 2014
I have diagnostic tools for use
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by mayor2013: 9:36am On Aug 13, 2014
Its very abnormal to have your check engine light on or fluctuate. If it fluctuates its more hazardous. To be on a safe side run a comprehensive scan that can scan all components on your vehicle. Less I forget no details of car
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by autofixng: 11:41am On Aug 13, 2014
Bossmd:
How do you scan the vehicle?
What are the required tools needed?
You scan the car with a diagnosis tool.
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Specialist900(m): 12:28pm On Aug 13, 2014
Sorry to digress

On my 05 corolla, the MAINT REQD light blinks like 6 times on starting the vehicle and goes off. This started 3days ago, it's not been 2 months since I changed the oil and haven't done much miles with it except intra-city runnings.

Advice needed pls
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by mayor2013: 12:29pm On Aug 13, 2014
If you have changed all that and you are still getting same result I suggest you give it out to a competent technician
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Stylz69(m): 12:44pm On Aug 13, 2014
Specialist900: Sorry to digress

On my 05 corolla, the MAINT REQD light blinks like 6 times on starting the vehicle and goes off. This started 3days ago, it's not been 2 months since I changed the oil and haven't done much miles with it except intra-city runnings.

Advice needed pls

Your MAINT REQD light blinking and going off indicates that your vehicle requires an oil change soon. If i recall, it starts flashing at 4,000 miles and stays on permanently at 5,000 miles.Since it has been 2 months since your last service and you haven't done that much miles, then it must be that you carried out the oil change in between the service intervals. I would suggest that you ignore the light when it stays on permanently and use the car till your next service. When you perform the next oil change, reset the MAINT REQD light and carry out subsequent services at those intervals of 5000 miles.
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Specialist900(m): 3:06pm On Aug 13, 2014
Stylz69:

Your MAINT REQD light blinking and going off indicates that your vehicle requires an oil change soon. If i recall, it starts flashing at 4,000 miles and stays on permanently at 5,000 miles.Since it has been 2 months since your last service and you haven't done that much miles, then it must be that you carried out the oil change in between the service intervals. I would suggest that you ignore the light when it stays on permanently and use the car till your next service. When you perform the next oil change, reset the MAINT REQD light and carry out subsequent services at those intervals of 5000 miles.
I don't remember the mechanic resetting the MAINT REQD light after the oil change.

Pls how is it reset?


Thanks for the response
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Stylz69(m): 3:13pm On Aug 13, 2014
Specialist900: I don't remember the mechanic resetting the MAINT REQD light after the oil change.

Pls how is it reset?


Thanks for the response
Press the Odometer button till it shows actual mileage, not Trip A or Trip B. Switch off ignition. Hold down the odometer button and turn your ignition to the 'ON' position, keep holding it down and you should see 5 dashes, then 4,3,2,1 the all zeros then your mileage will come back to the display and the light should go off.
Re: What Is The Problem With My CHECK ENGINE LIGHT?? by Specialist900(m): 3:39pm On Aug 13, 2014
Stylz69:
Press the Odometer button till it shows actual mileage, not Trip A or Trip B. Switch off ignition. Hold down the odometer button and turn your ignition to the 'ON' position, keep holding it down and you should see 5 dashes, then 4,3,2,1 the all zeros then your mileage will come back to the display and the light should go off.
done. Case solved. Thanks I appreciate

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