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-   -   02 grand p0155 error (http://www.jeepgarage.org/f77/02-grand-p0155-error-46561.html)

fritothebandito 08-25-2012 01:59 PM

02 grand p0155 error
 
The error code displayed is p0155. the mopar shop manual says "2/1 O2 sensor heater failure" and then under brief description of DTC it says "oxygen sensor heater element malfunction" I am going to replace one of the O2 sensors but which one upstream or down stream? In reading the manual it would seem like the downstream, but i defer to the experts!


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