O2 heater circuit. CEL on.
10-06-2014, 01:22 PM
#1
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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?
10-06-2014, 01:31 PM
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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?
Did you inspect all the O2S wiring for chafing or breaks?
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