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magdalenawolf81

GTR System Readiness Incomplete

Got a weird one. '22 GTR, gasoline engine, 88k km. System readiness is incomplete after a simple OBD2 scan. Check engine light's on, throwing codes. I suspect the emissions test will fail. What gives?

Summary of the thread

A 2022 GTR with a gasoline engine showed an incomplete system readiness status and a check engine light after an OBD2 scan, raising concerns about failing an emissions test. The issue was suspected to be related to the vehicle's computer entering a problematic state post-scan. A suggested solution involved performing a specific drive cycle and potentially resetting the computer. Ultimately, a reset and a new drive cycle resolved the problem without any cost.

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4 comment(s)

hannahschwarz6

I had a similar issue with my '18 BMW M4. Same thing, ran an OBD2 scan, then suddenly I got a system readiness error. It wouldn't clear, and I couldn't pass inspection. Did you try a drive cycle, specifically targeting the monitors that are not ready?

magdalenawolf81 (community.author)

Drive cycle? I've heard of it but never bothered since it always worked on its own. Which monitors were being a pain for you?

hannahschwarz6

Yeah, it's a pain. For me, it was the evap and catalyst monitors, which are pretty common ones to get stuck. I tried a specific BMW drive cycle a few times and it just wouldn't budge. After digging, I discovered this is a known issue and that even with the drive cycles, it just wouldn't complete. Ended up taking it to a shop. They said the computer sometimes gets into a weird state after an OBD2 read and needs a specific reset to clear everything. Worth a shot before digging deeper.

magdalenawolf81 (community.author)

Appreciate the info! Turned out it was exactly as you said. They reset the computer, forced a new drive cycle and all good. Cost me nothing - they said it was 'courtesy service'. Thanks!

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NISSAN

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GTR