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spongebob · 08-06-2021, 05:25 AM

How does it work with some fault codes?
Can they be completely self erasing if the status becomes ok again after a fault ?
I read two codes a while ago P0430 ( cat conv. Bank 2) and P0159 ( sensor aging) when the Check engine light turned on.
Never cleared them however. But after topping up with fuel, the Check engine light went back to normal ( no light ) . All looked good-for some hours but the suddenly the CEL came back on. Same codes when checking.
Are some codes self-clearing and others not ?

08-06-2021, 05:25 AM	#1
spongebob Registered User Join Date: Aug 2006 Location: Sweden Posts: 117	Selfclearing fault codes How does it work with some fault codes? Can they be completely self erasing if the status becomes ok again after a fault ? I read two codes a while ago P0430 ( cat conv. Bank 2) and P0159 ( sensor aging) when the Check engine light turned on. Never cleared them however. But after topping up with fuel, the Check engine light went back to normal ( no light ) . All looked good-for some hours but the suddenly the CEL came back on. Same codes when checking. Are some codes self-clearing and others not ?