MM63

Hey guys.
so out of nowhere i started my car today, and the Cel came on and its throwing the codes P2440 and P2442 - Cleared them and they came back after some time.

the code is - Air system switching valve stuck open bank 1 and 2.

anyone here knows whatsup or can help?


cheers.

Diabolis

There is a secondary air injection pump and two diverter valves that open at cold starts and inject fresh air into the exhaust manifolds / catalytic converters in order to reduce emissions. Something in there has failed... could be an electrical connection issue, air / vacuum leak, the pump or valves themselves (unlikely that both would fail simultaneously though... more likely one of the first three possibilities).

Learn how to search... there's a post here at https://mbworld.org/forums/c63-amg-w...-solution.html on the exact same issue.