Login Register

Codes ECM-4801 and ECM-990A

Post Reply
goldxc70
Posts: 65
Joined: 24 Aug 2013, 16:42
Year and Model: XC70 2004
Location: Toronto
Has thanked: 27 times
Been thanked: 3 times

Post by goldxc70 »

Just replaced my fuel pump and now looking for the reason my CEL is on!

These are the codes pulled by VIDA-DICE (thanks Pierre!):

ECM-4801 Three-way Catalytic Converter (TWC) efficiency, bank 1 - Faulty signal
ECM-990A Idle air trim - Faulty signal

Are these related to each other?

One thing I did notice is that the "braid" around flex pipe seems to be damaged. Tomorrow, I'll get under there to see if it's leaking.

UPDATE: heard from others that damaged braid is quite common and is not a problem unless there is a leak and there is none that I could detect today.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post