noahheld10
Sprinter check engine light and NOx sensor issue
Summary of the thread
A 2001 Mercedes Sprinter with a gasoline engine had an illuminated check engine light and a logged NOx sensor error, accompanied by a suspected exhaust leak. The issue was thought to be due to a defective cable or plug connection. After consulting with a technician, a faulty NOx sensor connection was identified and repaired, resolving the check engine light problem.
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4 comment(s)
noahheld10 (community.author)
Could you elaborate on the specific issue you encountered with your Sprinter's exhaust system? A NOx sensor measures nitrogen oxide levels emitted by the engine. While my Sprinter has a gasoline engine, diesel engines also use NOx sensors to control emissions.
kurtmoon1
The garage found a problem with my exhaust system and suggested a replacement. I would suggest a visit to a workshop for a proper diagnosis. It sounds like your issue is a bit more technical.
noahheld10 (community.author)
I consulted with a technician who found a faulty NOx sensor connection. They fixed the connection and cleared the error codes, and the check engine light is now off. Your insights were valuable in guiding my decision.
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MERCEDES
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SPRINTER
kurtmoon1
I had a similar check engine light issue with my Sprinter that turned out to be exhaust system related. I do not know what a NOx sensor is, but could it be related to the diesel engine?