T-Roc OBD Readiness Issues Halt Emissions Testing

Having dealt with a similar OBD readiness issue on my 2019 VW T-Cross, I understand your concern. With some experience working on VW onboard diagnostics, I can share what worked in my case. After the initial OBD2 scan showed incomplete readiness, my workshop explained that this is common after disconnecting the battery or clearing error codes. The system needs to complete a specific drive cycle to reset all monitors and achieve readiness status. Here is what helped reset my system at no cost: Started with a cold engine, Let it idle for 2-3 minutes, Drove normally for 10-15 minutes, including both city and higher speed driving, Made sure to include steady throttle periods, Avoided aggressive acceleration or braking Before offering more specific advice, could you share: What specific error messages appear in your display? Have you recently had battery work or code clearing done? Are you experiencing any drivability issues or exhaust system sounds? These details would help determine if your situation matches what I encountered or requires different steps.

I had the same error codes show up at 70366km. The dealership told me during my last service that incomplete readiness status often results from recent computer reset events. The car diagnostics indicated no major mechanical issues, but several drive cycle attempts were needed before all monitors completed. The most concerning part was the exhaust system monitor, which took longest to achieve readiness status. The drive cycles eventually cleared all monitors, but it required consistent driving over several days. This seems to be a known quirk with these models where OBD readiness takes longer to complete after code clearing.

Thanks for sharing those details about your experience at 70366km. My T-Cross had nearly identical symptoms, and the exhaust system monitor was also the last one to complete its readiness status. After multiple drive cycles, my remaining monitors finally cleared. The key was maintaining steady speeds between 60-90 km/h for longer stretches, which helped the vehicle inspection systems complete their self-tests efficiently. The computer reset process definitely requires patience, rushing the drive cycle can actually delay the readiness monitors from completing. Looking back, it took about 4-5 days of regular driving before all systems showed ready. The check engine light stayed off after that, and I passed the emissions test without issues the following week. If your driving patterns are similar to mine, you should see the monitors complete soon. One tip that helped: keeping track of which specific monitors were still incomplete using an OBD2 reader during the process. This way you can focus your driving style on triggering those remaining tests rather than repeating cycles unnecessarily.

Thanks everyone for the helpful replies. After following the suggested drive cycle patterns and monitoring the incomplete readiness status with my own OBD2 reader, I can confirm my experience matches what others described. It took about 5 days of regular driving, but all onboard diagnostics monitors finally completed. The exhaust system monitor was indeed the last to achieve readiness status, requiring several steady-speed highway runs. Once the computer reset process finished, I successfully passed the emissions test with no issues. The check engine light has stayed off since then. For others dealing with similar OBD readiness problems: patience during the drive cycles is crucial. Rushing the process or driving too aggressively just delays the system readiness monitors from completing properly. My system needed consistent, calm driving patterns over multiple days to reset all monitors correctly after the codes were cleared.