O2 sensor keeps going bad?

[F22A1forlife]

Ok my 93 SE coupe is on its 3rd o2 sensor in 8 months. The codes are 1 and 43 like its been the times before. What could be causing this to happen? Id really like to fix this problem.

[buzz11]

What brand is the O2 sensor?
It pretty well known that Bosche O2 sensors do not work well for cb7s

[Jking72]

Bad ecu? My p12 had a code stuck and I replaced the ecu and it's gone.

I was using a NTK o2 sensor too.

[PhatAccord]

Ok my 93 SE coupe is on its 3rd o2 sensor in 8 months. The codes are 1 and 43 like its been the times before. What could be causing this to happen? Id really like to fix this problem.

i would look into dtc 43. it is coding for fuel system. if the fuel system is running too rich, it can foul and damage the O2 sensor.

[F22A1forlife]

Ive been running denso o2 sensors. It runs like crap till the cel comes on. Till its on it bogs down if your just driving normal. If you let off the gas and push it back down its fine for about 5 seconds. If you floor it its fine till you let off the gas.

[cloudasc]

I would check the connections for your o2 sensor, and maybe even take a multimeter and check the resistance of the wires leading from the ecu, through each connector.

[F22A1forlife]

I will have to try that. But for now im gonna have to park her. The oil pump went out today.

[deevergote]

When you removed the other new sensors, were they fouled? All covered in black carbon? If your engine is running poorly, an o2 sensor can get fouled pretty quickly. As said, be sure to check your wiring. If the wiring has been spliced or damaged in some way, the resistance (and therefore the reading) of the o2 sensor may be off.