P0138
11-21-2010, 06:24 PM
#1
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Year: 2000
Model: Cherokee
Engine: 4.0
P0138
Got this code on my 99.
P0138 O2 sensor circuit high volts (bank 1 sensor 2)
What testing should I do before just changing out the sensor?
P0138 O2 sensor circuit high volts (bank 1 sensor 2)
What testing should I do before just changing out the sensor?
11-22-2010, 04:22 PM
#2
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Year: 2000
Model: Cherokee
Engine: 4.0
I did do a search on this. BUT Most of the threads skipped over how to test the circuit or the sensor.
Could really use the help.
Could really use the help.
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