Backers Posted April 28, 2023 Share Posted April 28, 2023 Hi all Audi A4 B8 3.0L diesel sline 2013 I recently replaced the O/S/F headlamp bulb by removing the airbox. when i restarted the car the enging warning light came on and i cant figure out why. I removed the code and it was ok until i restarted the car the next morning when it came back on again . There is an electrical connector under the airbox which i re attached and a small air tube/breather/vacuum pipe running across the front of the engine which i also reconnected. Any suggestions would be welcome Thanks Quote Link to comment Share on other sites More sharing options...
Steve Q Posted April 30, 2023 Share Posted April 30, 2023 I'd recommend a diagnostic check to see if any fault codes flag up. If you've removed the air box the only thing I can think you've dislodged is the maf sensor. Quote Link to comment Share on other sites More sharing options...
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