Quote:
Originally Posted by sprtmedguy
2010 Ram 2500 6.7 L diesel with engine light on and fault code P049D. I know it has to do with the EGR and exhaust filter. Truck is running just fine. What recommendations do you have for me? Should I see dealer or can I simply reset this, and if so, how? Thanks to all.
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Sprt,
The code you have was mentioned in a TSB involving the ECM. I have posted it below to help you decide if you want to take it in to the dealer to have them look at it. Perhaps this flash will correct your issue.
NUMBER: 18-004-11 REV. B
GROUP: Vehicle Performance
DATE: December 21, 2011
SUBJECT:
Flash: Diagnostic and System Improvements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Engine Control Module
(ECM) with new software.
MODELS:
2010 (DJ) Ram Pick Up (2500)
2010 (D2) Ram Pick Up (3500)
NOTE: This bulletin applies to vehicles equipped with a 6.7L Cummins engine (Sales
code ETJ).
SYMPTOM/CONDITION:
Pick up trucks equipped with a 6.7L Cummins diesel have a number of software
improvements/enhancements available. This SB will include improved robustness
for DTC's:
· ** P049D - EGR CONTROL POSITION EXCEEDED LEARNING LIMIT **
· ** P2002 - DIESEL PARTICULATE FILTER EFFICIENCY BELOW THRESHOLD **
· ** P2195 - O2 SENSOR 1/1 OUT OF RANGE HIGH **
· ** P2196 - O2 SENSOR 1/1 OUT OF RANGE LOW **
· ** P2270 - O2 SENSOR 1/2 OUT OF RANGE HIGH **
· ** P2271 - O2 SENSOR 1/2 OUT OF RANGE LOW **
· ** P241A - O2 SENSOR 1/1 AND 1/2 OXYGEN CONCENTRATION MISMATCH **
· ** P2609 - INTAKE AIR HEATER SYSTEM PERFORMANCE **
NUMBER: 18-004-11 REV. B
GROUP: Vehicle Performance
DATE: December 21, 2011
· P046C - EGR POSITION SENSOR PERFORMANCE
· P051B - CRANKCASE PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE
· P0101 - MASS AIR FLOW SENSOR "A" CIRCUIT PERFORMANCE
· P245B - EGR COOLER BYPASS STATUS LINE INTERMITTENT
· P2262 - TURBOCHARGER BOOST PRESSURE NOT DETECTED - MECHANICAL
NOTE: Vehicles flashed to address the above codes should be driven and repair
validated. If code(s) return, follow diagnostic procedures available in
DealerCONNECT/TechCONNECT.
Improvements other than DTC robustness or enhancements:
· ** Ability to read EGR valve gap on wiTECH (version 12.02) **
· ** MIL on with no DTC **
· ** Erroneous, brief brake lamp flash at key on **
· WiTECH Turbo hysteresis test improvements
· Scan tool reporting fixes
· Stationary regeneration improvements
· Other driveability enhancements
Secure Bootloader software
If the Engine Control Module (ECM) does not have a calibration installed, or has an
unapproved calibration installed then the ECM will be in a Read Only Memory (ROM) boot
state. The ECM will have power but the lack of approved software will not allow the vehicle
to be started and driven. No further diagnostics of the ECM will be available at this time.
This code will be cleared and issue resolved when the ECM is updated with the correct
approved calibration. Refer to the DealerCONNECT > TechCONNECT > Service
Information for more detail.
DTC U1601 set outside of the dealership with a no crank (towed in), no start condition
caused by unauthorized (up-rate) software will NOT be covered under the terms of the
warranty.
DTC U1601 code may also be set when a legitimate flash is interrupted for any reason.
engine fault codes
