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Q: Hey I got this BMW I got code p0491,p0492,p0455

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The car barley idles with out wanting to shut off and and makes a occasional grinding sound from the engine How can fix this issue I checked most of the Hoses but I can't seem to figure it out

My car has 177000 miles.
My car has an automatic transmission.

Hello. The grinding sound occurring on your vehicle is likely caused by the secondary air pump failing internally. I believe so because the codes in your vehicle P0491 and P0492 are both codes related to the secondary air injection system. When the air pumps fail they tend to produce a grinding noise. The last Code P0455 is an EVAP emission code stating that there is a leak detected in your system. The leak could be from an EVAP line, evap canister, or maybe a faulty gas cap. I suggest that you have a technician such as one from YourMechanic evaluate your vehicle to help further advise you on how to fix it. You are able to find a technician and book an appointment here https://www.yourmechanic.com/services/check-engine-light-is-on-inspection

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