stefanknight1
System readiness check incomplete error
Summary of the thread
A 2021 electric Mini Cooper displayed a "System readiness check incomplete" error on the speedometer, suspected to be caused by an OBD2 diagnostics read. This issue can occur if the OBD2 scanner interrupts the car's onboard diagnostics self-tests. The suggested solution was to reset the system, which was confirmed effective by a mechanic, resolving the error without any charge.
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4 comment(s)
stefanknight1 (community.author)
Thanks for the quick reply No exhaust work recently but I did use an OBD2 scanner to check for some unrelated stuff last week Could that have caused it even if I didn't change anything And no I haven't cleared any codes myself yet was hesitant to mess things up further
johannesweber1
Yeah it's definitely plausible Reading with an OBD2 scanner can sometimes interrupt the onboard diagnostics self-tests leading to that system readiness issue Basically the car hasn't had a chance to complete all its internal checks You might be looking at a vehicle inspection issue otherwise If it's just the OBD2 read a reset should fix it but I'd still swing by a workshop just to be safe
stefanknight1 (community.author)
Just wanted to update you you were spot on Took the Mini to a trusted mechanic Turns out the OBD2 read did mess with the system readiness They reset it and the error's gone No charge which is a win Thanks a ton for the help
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MINI
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COOPER
johannesweber1
Interesting System readiness incomplete can be a pain Was there any work done recently on the exhaust system or anything related to emissions When was the vehicle inspection done last time Sometimes a pending code can cause this even if it hasn't triggered the check engine light yet Have you tried clearing the codes yourself