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Discussion Starter #1
Got the dreaded check engine light. Does anyone know the main reason this light comes on. Seems to drive the same so far.. I was in parking garage headed into work when it came in. Seems to be driving fine. Got gas a day ago so dont think it’s the gas cap
 

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The big auto parts stores, AutoZone, Advance Auto Parts, will connect a code reader free of charge, and give you the codes and a possible cause. At least this will give you an idea of what is wrong.
 

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Discussion Starter #3
It says u0140. Easy fix? Now the light isn’t on after I got it checked. I got appointment for Saturday to check it. Safe to drive till Saturday?
 

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it is probably a software error in the powertrain control module. could be something else as well. I had the same code. But--my light went off and the RR service mgr said keep driving until it happens again. If it is software it will cost about 2 hrs labor to install the new software. If you light stays on I would definitely have it checked and if the software needs upgrading, do it.
 
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