nmfive Posted May 7 Share Posted May 7 Greetings, I got check engine light and code: U04A400 - Invalid data received from PM sensor Has anybody have any experience with this kind of code? Tried also googling it, but there isn't much information about it. It seems to indicate particulate matter sensor fault but tried replacing one (4K0906261) and there was no effect. Even unplugging the sensor didn't change anything on live data related to particulate sensor. Quote Link to comment Share on other sites More sharing options...
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