Just got done changing the transmission filters, and of course the codes pop up, P0841 is L/R Pressure Switch Rationality... From What iv'e heard, it can be caused by the oil filters themselves.. Anybody have any experience?

 

This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of DaimlerChrysler Corporation.
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-016-05, DATED
SEPTEMBER 01, 2005, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS
A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.
SUBJECT:
RFE Transmission Filters - Delayed Engagement And Related Transmission DTC'S
OVERVIEW:
This bulletin involves verifying the build date of the transmission, and if necessary, the
replacement of both the cooler return and sump filters in the transmission.
MODELS:
2005 - 2006 (DR) Ram Truck
2005 - 2006 (HB) Durango
2005 - 2006 (KJ) Liberty / Cherokee
2005 - 2006 (ND) Dakota
2005 - 2006 (WK / WH) Grand Cherokee
2006 (XK) Commander
NOTE: This bulletin applies to vehicles equipped with the a 45RFE or a 545RFE
automatic transmission (sales code DG4 or DGQ respectively) having a
specific transmission build date code (see the below DIAGNOSIS section for
further details).
SYMPTOM/CONDITION:
The customer may experience an initial delayed shift engagement following an extended
off (not running) period of time, generally after being parked overnight. The initial shift
engagement may feel like a delay or slip when a transmission gear (reverse or drive) is
first selected after engine start.
The customer may also experience a MIL illumination. Investigation may determine that
the MIL is due to one or more of the following Diagnostic Trouble Codes (DTC's):
P0868 - Line Pressure Low. This DTC will be the most frequently occurring DTC for
the delayed shift condition.
P0944 - Loss Of Hydraulic Pump Prime.
NUMBER: 21-007-06
GROUP: Transmission
DATE: April 07, 2006
P0731 - Gear Ratio Error In 1st.
P0736 - Gear Ratio Error In Reverse.
P0841 - LR Pressure Switch Rationality.
P0876 - UD Pressure Switch Rationality.
The delayed engagement and MIL condition (DTC's) may be caused by a suspect
transmission cooler return filter with a part number of 04799662AB. A suspect
04799662AB cooler return filter may cause the transmission sump filter to split at its
plastic-to-metal crimp. If the transmission sump filter becomes split at the crimp, then one
or more of the above DTC's may also occur.
DIAGNOSIS:
1. Turn the ignition to the “OFF” position.
2. Raise the vehicle on a suitable lift.
Fig. 1 TRANS IDENTIFICATION NUMBER
1 - TRANSMISSION IDENTIFICATION (SERIAL AND PART) NUMBER - 20 DIGIT
3. Inspect for the transmission build date (Julian date) (Fig. 1). The transmission build
date can be determined by inspection of the 20 digit transmission identification number
(DDDYxxxxxPpartnumber). The transmission identification number is stamped on the
left side (driver side) of the transmission oil pan flange. The first four (4) digits of the
transmission identification number are the transmission build date, in Julian date
format. An example of a transmission identification number would be :
101510492P52119684AA. The first three digits ( 101 ) of the identification number
equal the day of the year, in this case 101 equals April 11. The fourth digit ( 5 ) of the
identification number equals the calendar year, in this case 5 equals 2005. So 1015
equals April 11, 2005.
21-007-06 -2-
4. Determine if the vehicle's transmission was built on or between one of the two sets of
Julian date build ranges listed below:
a. Julian date 0425 (February 11, 2005) to Julian date 0455 (February 15, 2005). 0425
to 0455.
b. Julian date 1015 (April 11, 2005) to Julian date 2345 (August 22, 2005). 1015 to
2345.
5. If the vehicle has the above condition, and if the transmission Julian build date is on or
between the range of dates listed above, perform the Repair Procedure.
NOTE: Both the transmission cooler return filter and the transmission sump filter
MUST BE replaced at the same time.
PARTS REQUIRED:
NOTE: DO NOT use a replacement cooler return filter with a part number of
04799662AB. This filter is suspect of causing the above condition. The cooler
return filter part number is stenciled on the side of the filter's metal case.
Qty. Part No. Description
1 04799662 Filter, Transmission Cooler Return
(AR) 1 05015267AC Kit, Transmission Sump Filter - 4x2 (verify p/n
for specific vehicle)
(AR) 1 05013470AC Kit, Transmission Sump Filter - 4x4 (verify p/n
for specific vehicle)
4 05013457AA Fluid, Automatic Transmission, MS-9602
ATF+4, Quart
1 05010884AA Mopar ATF-RTV
SPECIAL TOOLS/EQUIPMENT REQUIRED:
8321 Oil Filter Wrench
REPAIR PROCEDURE:
NOTE: All cooler return filters with the “AB” suffix (04799662AB) are suspect. The
above condition may be corrected by replacing a suspect “AB” filter with a
new cooler return filter whose part number is 04799662 (with no suffix or with
a suffix that is other than the “AB” level), and a new sump filter.
NOTE: BOTH the sump oil filter and the cooler return filter MUST BE replaced in the
transmission at the same time. Do not replace one filter without also
replacing the other filter.
-3- 21-007-06
NOTE: A replacement 04799662 cooler return filter may come packaged with a
separate threaded adapter stud. The threaded adapter stud is used to attach
the cooler return filter to the transmission. Inspect the stud and note end
without threads. Install the stud end without the threads into the cooler
return filter and tighten the stud-to-filter connection to 18.6 Nm (165 in. lbs.).
Once the threaded adapter stud has been installed to the cooler return filter,
install the assembled cooler return filter to the transmission and tighten the
filter to 14.1 Nm (125 in. lbs.)
Fig. 2 Transmission Filters - 4X4 Shown
1 - SUMP OIL FILTER
2 - COOLER RETURN FILTER
3 - COOLER RETURN FILTER BYPASS VALVE
4 - VALVE BODY
Use the procedures outlined in TechCONNECT® ( Service Information Tab / 21 -
Transmission Transaxle / Automatic - 45RFE 545RFE / Fluid / Standard Procedure / Fluid
and Filter Replacement) to replace BOTH the transmission cooler return filter and the
transmission sump oil filter.
NOTE: Always install the sump filter seal to the bottom of the transmission oil pump
first, then install the sump filter to the oil pump and previously installed seal.
DO NOT install the sump filter seal to the sump filter and then attempt to
install both to the oil pump.
21-007-06 -4-
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
Description Amount
21-55-02-93 Install New Filters, Cooler Return and Sump 0.9 Hrs.
21-55-02-60 Optional Equipment: Skid Plate Equipped
(2005-2006 KJ / 2005 ND / 2005-2006 WK WH)
0.2 Hrs.
FAILURE CODE:
ZZ Service Action

 

I disconnected the battery, disconnected the solenoid pack, sprayed connectors with wire-dry, waited 5 min and reconnected everything, cleared the codes (Torque App) and started her up, so far it seems to be working, but ill keep a close eye on it. Also, she idles about 600 and seems to want to stall every once in a while...