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View Full Version : VW 1.6 fsi O2/lambda off



navatar
2nd August, 2017, 03:57 PM
Hello friends I have a big favour to ask...

I have Jetta mk5 with 1.6 FSI with BSE engine and Continental Simos7.1 ecm. The car has had catalytic converters removed but is giving dtc P0420 16804 vcds say "Catalyst system; Bank 1 Efficiency below threshold - intermittent".

ECU number is "06A 906 033 GG" with 29f400 flash

Please someone can remove rear O2/lambda sensor from ECU file and remove DTC P0420 and I will be forever in debt.

Thanks you kindly

silvister
2nd August, 2017, 05:11 PM
LAMBDA OFF TEST FILE

navatar
2nd August, 2017, 06:09 PM
LAMBDA OFF TEST FILE

Will test it in the morning thanks mate

navatar
3rd August, 2017, 11:57 AM
LAMBDA OFF TEST FILE

Hi mate, I put file and then get DTC b1s2 heater circuit open, I plug lambda sensor back in and all faults gone. I drive 25km and no fault codes so I think it's working.

Thank you very much Silvister you help me a lot.