I need to clear a code

Started by Smithy, February 13, 2024, 20:31

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Smithy

Good evening all. I fitted a new exhaust manifold gasket at the weekend and while I was taking it for a test drive I had an engine code appear. Looking at the engine bay I realised that I hadn't reconnected one O2 censor. What's the best way to clear it without a code reader or is that the only way?
Thanks all
03 Astral black MR2 OEM+

tomato

 Can unplug battery, leave for 15 mins or so,check battery drained by pressing horn.

Reconnect ecu will reset I believe

Topdownman

As said above, disconnecting the battery will do it, the car will then relearn the settings over the next few miles of driving (10-30 miles?).

Equally, if you have corrected the fault, the car should detect this as you drive and I imagine the code would disappear once the ecu detects the sensor again.

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paulj

I think the Car Scanner app on android will reset ECU as part of the free of charge offering.  I know you said you haven't got a reader, but a cheapy OBD reader is less than £10 and the app is free.  I keep the reader in the glove box and my phone is with me so always ready for any pesky codes.
Today
2000 x reg pfl - blue - as original no mods
In the late 1980's
1982 x reg Toyota Corolla Liftback Coupe (also blue)
1978 s reg Mitsubishi Celeste Coupe (yellow)

Smithy

Battery disconnect for 30mins did the job. Thanks everyone.pailj I will definitely look into an obd scanner to work with the phone app.
Thanks again everyone
03 Astral black MR2 OEM+

Chilli Girl

Ex owners of Chilli red facelift 52 reg called Chilli, silver 55 reg called Foxy and blue pfl W reg MR-S called Sapphire. Now 2 less!

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