LandCruiser OBD2 Readiness Monitors

I've got a head-scratcher with my 2012 Toyota LandCruiser running a petrol engine. It's only clocked 36780 km. I plugged in an OBD2 scanner, and now the system readiness check is showing as incomplete. I've got an error stored and a message displayed. I've already cleared the codes, but the readiness monitors won't set. Any thoughts?

4 comment(s)

I had something similar happen with my LandCruiser. Did you recently clear the ECU? Clearing the codes can reset the readiness monitors, and they need to run through their cycles before they're 'ready' again. Just drive it for a few days, doing different types of driving (highway, city etc.).

Yeah, I cleared the ECU when I pulled the initial codes. You reckon that's all it is? Just needs more drive cycles to reset the onboard diagnostics for the emissions test and exhaust system?

Yup, that was it for me. If it's still not ready after a week of mixed driving, then I'd suggest taking it to a workshop. They can force the readiness monitors to run.

Drove it for a week, and the readiness monitors have finally reset. Seems the OBD2 read did cause an issue, but no repair was necessary and it cost me 0€.

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