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Codes ECM-4801 and ECM-990A

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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goldxc70
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Joined: 24 August 2013
Year and Model: XC70 2004
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Codes ECM-4801 and ECM-990A

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.
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