Will check engine light automatically turn off after PO440, PO441 and PO446 codes are fixed?

Asked by Nov 30, 2013 at 09:38 PM about the 2003 Toyota Corolla CE

Question type: Maintenance & Repair

My 2003 Toyota Corolla CE has the check engine light on caused by the codes PO440, PO441 and PO446. I did several repairs and was wondering if the check engine light will automatically go out if the repairs are successful or do I need to reset the check engine light and wait to see if it comes back on.

5 Answers

make it go off by using one of these tools, check and "RESET CODES" ~

4 out of 4 people think this is helpful.
7,705

a simpler way to wipe the codes is to disconnect the battery for 15 -30 minutes. the car will have the codes and engine light on till the compuiter is fully reset. so disconnecting its power source for that amount of time reboots the system.

3 out of 3 people think this is helpful.
77,845

Disconnecting the battery is one way to do it, however as it is a Toyota you run the chance that you will activate the anti theft and disable the radio system thus causing you to go to the dealer to have it reset, the best way is do what the Judge stated, but if you are cramped for cash then look under the hood and inside the power distribution box you will find a main fuse marked ECM , remove that fuse and wait for 30 seconds, that will reset the ECM to factory presets, so you will have to drive your car around as you normally would so the ECM can relearn your vehicle. Sometimes a parts store can reset the codes for also, it just depends on how good for a code reader they have. Hope this helped.

6 out of 6 people think this is helpful.
2,715

Usually it will go off after driving about 50 miles with no issues

9 out of 9 people think this is helpful.
30

Check eng light trace on light toyota corolla le 2012 help me

3 out of 3 people think this is helpful.

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