Service News
Acura technical service bulletin B24040A for 2019-2020, 2022-2025 Acura MDX, 2019-2020 Acura TLX and 2019-2022 Acura Ilx and others.
- Bulletin number
- B24040A
- Component
- Engine
- Summary
- Service News - Due to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Readiness status group. Due to some customer’s driving patterns, they may not drive in the fashion needed to operate the VTEC (EGR/VVT) that only operates above 5,350 rpm to run the OBD monitoring. Therefore, the EGR/VVT OBD monitor group readiness status is not set to “Complete” when the customer presents their vehicle to a Smog Check station for inspection.
Owners of these vehicles have filed 347 complaints in the engine category.
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