1999 Passat GLX
 

I have 2 consistant faults happening P1137 and P1139 which are O2 sensors. The car runs great and has 185K miles on the engine. Anybody have any suggestions before I look to having the pricey O2 sensors fixed??

RE: 1999 Passat GLX
 

check to make sure that the o2 sensor did not come lose to start. if it is ok check the wire conections on it and give them a good brushing.

tony

RE: 1999 Passat GLX
 

check the voltage on the sensor, it might also be a wire, last time i checked arent oxygen sensors around $5?

RE: 1999 Passat GLX
 

I will do that first. No there are 4 O2 senors 2 in front and 2 in back and they all are approximately $135 each that is doing the job yourself. Any dealer want at least $200 per sensor before labor. Thanks again for suggestions I will post what I find out for anybody in the future.

RE: 1999 Passat GLX
 

are you sure its the o2 sensor and not some thing else for the exaust??

tony