2001 VW Polo O2 sensor faults

[adyady1066]

Hi guys. Any help would be appreciated here.

I have a 2001 Polo that has been VAG code read and come up with P1113 and P1186. I've just changed the pre-cat sensor and it's made no difference whatsoever. I can't find any advance or vacuum pipes loose / split and I'm at a loss now what it could be. The wiring loom is OK at the sensor and connector block and the codes just keep coming back as soon as the car has been started for more than a minute.

Any ideas?????

[Chromed]

It sounds like you have an electrical problem with the lambda wiring. Maybe take to an auto electrician.