P0135 O2 Sensor again (3rd time?!)

[UFO]

HI Guys, I've already done the O2 sensor warranty replacement on my '95 twice (three years ago and last month). Just got the CEL + TCS + P0135 (O2 sensor OBDII code) again...any ideas on what else might be the culprit? :frown:

Thanks, Mike

 

[CarCrazed4Life]

Well there are 4 02 sensors.. 2 precat and 2 postcat. I know I've done all 3 INDIVIDUALLY, but non have been replaced twice. I tried convincing the dealer to just do the fourth, but they couldn't under warranty.

 

[angus]

when i had a repeated o2 code I found out that , in fact a wire had pulled partially out of the connector,allowing only intermittent contact,I had to salvage a plug from another sensor,and insert the pins into it,problem solved.

 

[UFO]

Thanks, guys! I'll get under the car and see if the connector is loose. If no, I'll be taking it in to Cerritos Acura later in the week...I'm not sure which of the 4 have been replaced already, need to check my records...

Mike

 

[Malibu Rapper]

I've had mine replaced numerous times. More recently, I've been getting them if I let my car sit as I think the gas starts to go bad and water starts to come out of the exhaust. I just clear it by pulling the clock fuse and it will go away.