Just a little over 2000 miles now (and gotta say I really like these new trucks), and now the check engine light is on. Found out these trucks are much like the 2nd Gen where you can cycle the key 3 times and read trouble codes. The code I have is P245A. Took it to the dealer and they said as long as the light isn't flashing it is safe to drive. Can't get me in for another week to diagnose the problem. Anyone else have this particular problem, and should I go with what the service department said and continue to drive, or find another dealer.

 

This is the code.........



Theory of Operation
The EGR Cooler bypass valve is used to bypass the EGR cooler when the engine is in an active regeneration mode. This is to prevent EGR cooler fouling. There are two portions to this diagnostic. At key on the ECM drives the control line low and then high and monitors the correct status response. Throughout engine operation looks for status response voltage to be within 5-8 volts. The EGR Cooler Bypass valve will send a signal between 1.0 and 1.7 volts. When this occurs the ECM logs a fault. The second portion of this diagnostic monitors Exhaust Gas Recirculation temperature. If the EGR Cooler Bypass valve was in bypass mode incorrectly, the exhaust gas recirculation temperatures would exceed a temperature limit; this condition will also trigger the fault. The ECM will light a MIL lamp immediately after this diagnostic runs and fails. The ECM will turn off the MIL lamp after the diagnostic passes in four consecutive drive cycles.

When Monitored:
Key on

Set Condition:
Voltage detected at status line is between 1.0 volt and 1.7 volts for more than 150 seconds consecutively.

Possible Causes
(F348) SMART POWER RELAY COIL FEED SHORTED TO BATTERY
(F348) SMART POWER RELAY COIL FEED OPEN CIRCUIT
EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR ERRORS
COOLANT SYSTEM
EGR COOLER
(K671) STATUS CIRCUIT SHORTED TO GROUND
(K671) STATUS CIRCUIT SHORTED TO 5-VOLT SOURCE
ACTUATOR FAILURE


Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)




Diagnostic Test
1. OTHER DTC'S

--------------------------------------------------------------------------------

Ignition on, engine not running.
With the scan tool, read DTC's.

Are there faults present for the VGT, EGR Airflow Control Valve or Mass Airflow sensor?

Yes
Repair the open or short to ground in (F348) Smart Power Relay Coil Feed circuit.
Perform POWERTRAIN VERIFICATION TEST - 6.7L. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No
Go To 2


2. OTHER DTC'S

--------------------------------------------------------------------------------


Are there any faults present for the Exhaust Gas Recirculation Temperature sensor or EGR Aiflow Control Valve Circuit errors?

Yes
Troubleshoot those DTC's first.

No
Go To 3


3. P245A ACTIVE

--------------------------------------------------------------------------------


Is P245A Active?

Yes
Go To 4

No
Repair the intermittent condition.
Go To 7
Refer to the INTERMITTENT CONDITION - DIESEL Symptom. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)


4. COOLANT SYSTEM

--------------------------------------------------------------------------------

Check coolant system for correct coolant concentration, correct fluid level and any signs of contamination.

Does coolant system check okay?

Yes
Go To 5

No
Repair coolant system issue.
Perform POWERTRAIN VERIFICATION TEST - 6.7L. (Refer to 9 - ENGINE - STANDARD PROCEDURE)


5. EGR COOLER

--------------------------------------------------------------------------------

Remove EGR cooler.
Inspect for excessive cooler fouling/debris.
Inspect aftertreatment system damage.


Is EGR Cooler Fouled, or aftertreatment system damaged?

Yes
Clean EGR Cooler per service manual or replace if necessary or repair or replace aftertreatment system.
Go To 7

No
Go To 6


6. (K671) EGR COOLER BYPASS STATUS CIRCUIT OPEN

--------------------------------------------------------------------------------





Turn the ignition off.
Disconnect the C1 ECM harness connector.
Disconnect the EGR Cooler Bypass valve harness connector.

note: Check connectors - Clean/repair as necessary.


Measure the resistance between the (K671) status circuit in the EGR Cooler Bypass Valve harness connector with the (K671) status circuit in the ECM harness connector.

Is the resistance less than 10 ohms?

Yes
Replace the EGR Bypass valve.
Go To 7

No
Repair the open circuit or high resistance.
Go To 7


7. EXHAUST GAS RECIRULATION (EGR) TEMPERATURE SENSOR

--------------------------------------------------------------------------------

Remove the EGR temperature sensor and check for soot on the sensor.

Is there soot on the sensor?

Yes
Wipe off sensor using brake cleaner or contact cleaner, allow to dry and re-install.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 9 - ENGINE - STANDARD PROCEDURE)

No
Reinstall, repair complete.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 9 - ENGINE - STANDARD PROCEDURE)

 

This is the fix........

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.
THE StarSCAN® FLASH FILES FOR THIS BULLETIN MUST BE RETRIEVED FROM
THE INTERNET.
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-033-07 REV. A,
DATED JUNE 12, 2007, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS
A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.
SUBJECT:
Ram Truck 2500 & 3500 - Excessive Soot Accumulation In Exhaust, PCM May Not
Reprogram, OBD Readiness Status And Other Engine System Enhancements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with “bootloader” software and application software.
CAUTION: A special “bootloader” software with special reprogramming (flash)
procedures must be installed in the PCM before the application software.
Once the “bootloader” software has been successfully installed (flashed)
in the PCM, then the application software can be reprogrammed (flashed)
into the PCM.
MODELS:
2007 (DH/D1) Ram Truck (2500 & 3500)
NOTE: This bulletin applies to Ram Truck 2500 & 3500 vehicles equipped with 6.7L
Cummins turbo-diesel engine (sales code ETJ) built on or before June 11,
2007 (MDH 0611XX).
SYMPTOM/CONDITION:
The vehicle operator and/or technician may experience one or more of the following
conditions and/or enhancements:
1. The technician may not be able to reprogram (flash) the PCM with new
application software.
NUMBER: 18-033-07 REV. B
GROUP: Vehicle Performance
DATE: June 28, 2007
2. The vehicle may fail an Emission Inspection Maintenance (I/M) Test because two or
more On-Board Diagnostic (OBD) monitors report that they are not ready for testing.
This condition may cause the customer vehicle to not pass an Emissions I/M test. The
following is a list of OBD Monitors that may report as not ready for testing:
a. Non-Methane Hydrocarbon (NMHC) Catalyst Monitor.
b. Nitrogen Oxide (NOx) Absorber Monitor.
c. Exhaust Gas Temperature Sensor Monitor.
d. Electrical Charging System Monitor.
e. EGR System Monitor.
f. Oxygen Sensor Monitor.
3. After extensive idling of the vehicle engine or if an intake air leak is present, the
vehicle operator may experience a MIL illumination and/or an Electronic Vehicle
Information Center (EVIC) message alert due to one or more of the following DTC's:
a. P1451 - Diesel Particulate Filter System Performance.
b. P2463 - Diesel Particulate Filter - Soot Accumulation.
c. P242F - Diesel Particulate Filter Restriction - Ash Accumulation.
4. The vehicle operator may experience a MIL illumination due to one of the following
DTC's:
a. P0106 - Manifold Absolute Pressure Sensor Performance.
b. P242B - Exhaust Gas Temperature Sensor Circuit Performance - Bank 1 Sensor 3.
c. P245A - EGR Cooler Bypass Control Circuit - Open.
5. An intermittent rough engine idle and/or white smoke following initial engine start.
6. A throttle tip-in stumble at engine speeds of 1,300 to 2,100 rpm.
7. An engine hesitation at altitude of 5,000 feet between engine speeds of 1,200 to 1,600
rpm.
8. A turbocharger “chuff-like” sound during rapid deceleration.
DIAGNOSIS:
1. Connect the StarSCAN® to the vehicle Diagnostic Link Connector (DLC).
2. From the “Home” menu, select:
a. “ECU View”.
b. “PCM Powertrain Control Module”.
c. “View DTC's”.
3. Record DTC's that are present in the PCM.
4. Is DTC P242F present?
a. If YES >>> then STOP. Contact STAR for additional technical assistance.
b. If NO >>> then proceed to the next step.
5. Are either (or both) DTC P1451 or P2463 present?
a. If YES >>> then Section C - Exhaust System Aftertreatment Regeneration must be
performed AFTER Sections A and B (reprogramming the PCM for bootloader and
application software) of the Repair Procedure have been completed. Read the
following Cautions and Notes, then proceed to Section A of the Repair Procedure.
b. If NO >>> then Section C - Exhaust System Aftertreatment Regeneration should
NOT be performed. Read the following Cautions and Notes, then perform Sections
A and B of the Repair Procedure.
CAUTION: Before the application software can be reprogrammed (flashed) into the
Powertrain Control Module (PCM), the PCM must first be reprogrammed
(flashed) with “bootloader” software. Failure to reprogram the PCM with
the “bootloader” software first, may cause the process of reprogramming
the PCM with the application software to fail. The PCM “bootloader”
software special flash procedures must be followed closely to prevent
damage to the PCM.
18-033-07 REV. B -2-
CAUTION: The Repair Procedure involves a special and different reprogramming
(flash) procedure for “bootloader” software. Follow the Repair Procedure
steps. When performing the “bootloader” section of the Repair
Procedure DO NOT interrupt the PCM reprogramming session. This
special PCM “bootloader” software reprogramming session does not
support “abort - recovery” mode. If “bootloader” software
reprogramming is interrupted the PCM will be permanently disabled, and
will require replacement.
NOTE: The Repair Procedure should NOT be performed using the StarMOBILE™ in
its STANDALONE mode. Use the StarSCAN® to perform the entire Repair
Procedure.
NOTE: Before performing this Repair Procedure, the operating software in the
StarSCAN® must be programmed with software release level 8.01 or higher.
The software release level is visible in the blue header at the top of the
StarSCAN® screen.
PARTS REQUIRED:
Qty. Part No. Description
1 04275086AB Label, Authorized Modification
DSLFUELS Fuel Allowance (4 gallon maximum) - Allowed only if an
exhaust system manual aftertreatment regeneration is
required.
SPECIAL TOOLS / EQUIPMENT REQUIRED:
VEHICLES UPDATED USING StarSCAN®
NPN Battery Charger
CH9401 StarSCAN® Tool
CH9404 StarSCAN® Vehicle Cable
CH9409 StarSCAN® Documentation Kit
CH9410 StarSCAN® Ethernet Cable, 12 ft.
CH9412 StarSCAN® Software Update Device Kit
TechCONNECT PC or equivalent

 

Thanks for the info vzdude. Wish the service department that I took my truck to was as quick to respond to my problems.

 

Finally got an answer to my problem - EGR valve stuck open. I wanted them to just replace the EGR valve but the dealer told me today that before they can do the replacement they have to get an EGR kit and clean the EGR pipe/system. They're telling me that this procedure will take approx. 4-5 hrs. and must be completed before Star will allow replacement of the EGR valve.
32k on the clock with very little idling or city driving.
Sounds like the EGR mainfold cleaning that some of my Ferd diesel brothers had to deal with on the 6.ohno.

 

Mine had exact same code. Dealer had me in to do the re-flash , it's been 4 days and no lights yet , but I've gone a week and a half without lights too.
Dealer said the flash will fix the problem , we'll see.

 

Any update? Did the new flash fix the problem? Asking because I am having the same problem now... only 3k on the clock!

 

No, flash has not helped fix mine. Took to the dealer last week and they said to wait until later this week for a new flash. The new flash is supposed to fix this specific problem only.

 

Had the code. Reflash and cleaned the EGR...no problems for 2500 miles.

 

Had mine reflashed today. keep you posted on conditions