Degradation of the primary catalytic converter
Land Rover technical service bulletin SSM74404 for 2016-2019 Land Rover Discovery, 2012-2019 Land Rover Range Rover Evoque and 2015 Land Rover Discovery Sport.
- Bulletin number
- SSM74404
- Component
- Engine and engine cooling: exhaust system
- Summary
- Degradation of the primary catalytic converter. The DTC P0420-00 stored in the PCM indicates the primary catalyst is not operating at an optimal level.
Owners of these vehicles have filed 117 complaints in the engine category.
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