Mechanics

OBD PROBLEM NOT RECTIFIED BY DEALER - P0702

2004 Jeep Grand Cherokee • 137,000 miles

Jeep Grand Cherokee 2.7 Diesel 2004
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,
.T/cpntrol p0702
'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?


Avatar
Safcbobbyb
June 25, 2012.



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.

Roy

ASEMaster6371
Jun 25, 2012.