2004 Jeep Grand Cherokee Repair Question
OBD problem not rectified by dealer - P0702
OBD Warning light showing code P0702 - Put it into Chrysler main dealer today - reported as follows:
Engine management light on - carried out diagnostic checks-
Fault codes stored P1130 Fuel Rail Pressure malfunction
cmp circuit p0340, t/case position sensor p0336,
'cleaned up all connections on multi-plug & control unit -
light has come back & will require further investigation'
mileage 137000 - only got this 3 weeks ago and had a full service done today but now warning light on continuously - no apparent loss of power or performance - any ideas ?
code numbers never identify bad parts just failed systems.
you need someone with good diag skills, that can track each code down one at a time.
the 702 is a general trans failure code.
340 is a cam sensor code
1136 is a transfer case position sensor issue.
the fuel rail sensor code may be just that sensor. i have done a few and most of the time, it is the sensor.
dont go throwing any parts at it as most of the time guesses are expensive and mostly wrong.
i would start with the trans code as it is the most vague and may end up with re building the trans.
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