a2 1.6 fsi engine readiness fail : catalyst, evap, 02 sensor, heated 02 & egr

m70wse

Member
updated 02/07/2012

readiness test shown buy autel vag 405.

catalyst - fail
heate cat - pass
evap sys - fail
sec.air.sys - pass
a/c - pass
02 sensor - fail
heated 02 - pass
egr sys - pass


ive replaced the rear nox sensor - genuine part, new egr pipe - genuine part (which goes under the high pressure fuel pump) . also just replaced the front lambda sensor with bosch 7355 on the 30/06/12 & have now noticed heated 02 and egr have changed from fails to passes. im going to wait to see if the below code appears again

only seem to have the code p0420 appearing now & is catalyst efficency below threshold bank 1
this code appears after 1-4 weeks, think im going to replace the 2nd catalyst with either klarius 311984 or (8z0253024x genuine part) the pipe in between cat/back box klarius au435w (8z0253409 genuine part) and back box/silencer klarius au436v (8z0253609p genuine part)

& change these at a later point front cat (genuine part 1j0131690fx) klarius 322193
front pipe joing second cat (genuine part 8z02254300b) karius 301937
front cat temperature sensor part number 036906088c

any help would be great
 
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