Re: Toyota Avensis 1.8 2003 - Code P0420 Cat efficiency #
Keith Simpson | Message modified by user UKAT1240 December 16, 2010, 9:09 am
We have done a few of these cats a while back now, all genuine and not had a problem. The problem is with aftermarket cats flaging P0420. The dealers would re-flash to widen the ECU's parameters but this didn't always work either. I have not heard about the dealer wanting to replacing the ECU's for this problem unless they had or are having the same problem with the genuine one's now. I'll do some ringing around today and find out. Keith
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