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P1491

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Code P1491.
The most common cause of this code on this vehicle is the cooling fan relay in the under the hood fuse panel. I would have a technician such as one with YourMechanic come out and test the relay and diagnose...
Question
I have 2000 E320 Mercedes Benz and code p1491 came on with Check Engine Light.
Hey there. Your question isn't entirely clear, but I can address the code you have listed. The P1491 code has to do with your A/C system. Specifically, the high side of the A/C is too high. This could be for...

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