wideband inaccuracies
it was reading properly at low RPM/throttle position, but under moderate to
hard throttle it would give crazy readings that didn`t make sense.
i replaced the sensor and all is well now.
Replace the one you have, get a spare, keep the reciept- the bosch sensors have a 1 year manufacture's warranty.
Bosch 17014 or for the pimple popn' kid behind the parts counter, tell him/her you have a 2001 VW Golf 1.8L and need the front/pre-cat sensor.


