O2 heater circuit. CEL on.

Reply Subscribe

Thread Tools

Search this Thread

Oct 6, 2014 | 01:22 PM

89xjthepatriot

Thread Starter

Member

Joined: Jul 2013

Posts: 123

Likes: 0

From: Florissant

Year: 1989

Model: Cherokee

Engine: 4.0 RENIX

O2 heater circuit. CEL on.

1998 cherokee classic 4.0 aw4. The CEL is on and I need it off for inspection as I just bought the jeep. I scanned it and pulled up codes p0132 p0135 p0138 and p0141. All o2 sensor heater circuit codes. I replaced the blue 15amp fuse and have driven about 75 miles and it still hasn't gone away. Any ideas of where to start?

Oct 6, 2014 | 01:28 PM

89xjthepatriot

Thread Starter

Member

Joined: Jul 2013

Posts: 123

Likes: 0

From: Florissant

Year: 1989

Model: Cherokee

Engine: 4.0 RENIX

Oh and all new o2 sensors

Oct 6, 2014 | 01:31 PM

CCKen

CF Veteran

Joined: Aug 2010

Posts: 8,357

Likes: 102

From: Canton, MI

Year: 1999

Model: Cherokee

Engine: 4.0

Have you tried clearing the code with a code reader/scanner or by disconnecting the battery negative cable for about five minutes, and see if the code reappears?

Did you inspect all the O2S wiring for chafing or breaks?