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P0410 still failing after replacing pump and valve. S70

posted by  KlausC on  Tue Apr 8 09:56 CST 2014
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

I know that you are in California and the 'testing' is tough, but you could turn off the SAS completely. A simple diode added to the ECM and unplugging the SAS pump: http://volvospeed.com/vs_forum/topic/140772-sas-air-pump-deletewrite-up-with-pics/

I did my car by pulling off the cover of the ECM, much easier than splicing/dicing the wire bundle.

I have since removed the SAS pump, plugged the valve at the exhaust and have a much cleaner engine bay. Car seems to run better also.

If you plan to keep the pump, you will need to check all of the small vacuum lines, from the pump to the radiator and then to the manifold and rear valve. If you have pump noise after the 2 minute warm up, the relay could be at fault.

Rear O2 sensors don't fluctuate much, if at all. They can get dirty and die with age. Mine needs to be replaced, but at $130 I will just delete the code and wait another month.
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New P0410 still failing after replacing pump and valve. [S70]
posted by  flwright64  on Mon Apr 7 12:43 CST 2014 >


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