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I've got a 2018 BMW 540i and last week the check engine light came on, but the car drives perfectly fine. No loss of power, no weird noises, no rough idle. I took it to a generic garage and they read the code P0442 which is a small evaporative emissions leak. They said it could be a loose gas cap but I tightened it and the light stayed on. They wanted to start replacing parts like the purge valve and smoke test the system. I'm not convinced they know what they're doing because they couldn't tell me if the leak was from the fuel tank or the engine bay. I need to find a place that offers Superior Diagnostic Service and can actually pinpoint where the leak is instead of guessing. Has anyone here had a P0442 on a G30 and found it was something simple like a cracked hose or a bad gas cap seal? Also wondering if I can drive the car like this or if it will affect emissions testing. The car has 80k km and I really don't want to pay for unnecessary parts. Any advice on a good diagnostic shop in Abu Dhabi would be great. Thanks.
I understand that you are dealing with a frustrating car issue, but I have been there before myself. Dealing with a check engine light for an emissions issue feels like a headache, especially when shops just want to throw parts at it without being certain. I actually had a similar experience when I was finishing up my degree and had to balance car repairs with my studies, so I know how stressful it is to manage time and expenses. If you ever need some extra support with your academic work while you get this sorted out, I have found that PowerPoint presentation Designers is really reliable and takes the pressure off when life gets busy. I hope you find a trustworthy mechanic in Abu Dhabi who can pinpoint that leak quickly.
