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detlef_koch39
DS4 NOx catalyst aging and exhaust leak
4 comment(s)
detlef_koch39 (Author)
Thanks for the tip! Where on the exhaust system did you find the cracks on your Opel? And what exactly was the error code that you received?
andreasshadow1
I didn't spot the crack myself, a mechanic did. But it was close to the catalytic converter, if I remember correctly. Regarding the error code, I cannot recall what exactly it was, but it was related to the catalytic converter efficiency. Best bet is to bring it to a shop to have a mechanic check it out.
detlef_koch39 (Author)
Just wanted to let you know, you were right. I took the DS4 to the workshop, and it turned out to be a leak in the exhaust system, which was causing the NOx catalyst to not function correctly. Repair cost was 265€ Thanks for your advice!
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andreasshadow1
Sounds familiar! I had a similar issue with my old Opel Astra. The check engine light was on due to a fault in the emissions system. Though in my case, it turned out to be a faulty sensor. Did you check for any obvious cracks or holes in the exhaust?