Mechanics

CHEVY O2 SENSOR

2003 Chevrolet Cavalier

Electrical problem
2003 Chevy Cavalier 4 cyl Two Wheel Drive Automatic

I have replaced the O2 sensor twice now. Both times I still get the check engine lite. I know that the O2 works but the odb code says the o2 circuit is inactive.

did a fuse go or something? At my wits end on this one.

again here are the odb codes.

p0134 o2 sensor ckt no activity(bank 1 sensor 1)

p0130 o2 sensor circuit malfunction(bank 1 sensor 1)

p0135 o2 sensor heater circuit malfunction(bank 1 sensor 1)

again this is the second new o2 sensor I have installed. (The o2 sensor nearer to the motor.)

thanks
Avatar
B.pedro.a
May 22, 2008.



Did you use an OEM oxygen sensor? If so start checking the wire to it all the way to the computer for short to ground, open circuit. Wire okay could be the computer itself-

Rasmataz
May 22, 2008.