2012 3500 ECU Reflash -

[Grmoore1964]

I took my truck in for its first oil change (5000 miles) and one of the line items on the receipt was: Update ECU Software to release number 12350331AL, quick learn trans and road test.



Anyone know what this software update changed? I can't tell a specific change, but I do seem to notice it is either shifting more or I am noticing them more.



Thanks -



Greg

 

[Bob4x4]

Improved diagnostics and to prevent erroneous codes if my memory is

Working today

 

[sag2]

And a little more!



OVERVIEW:

This bulletin involves selectively erasing and reprogramming the Engine Control Module

(ECM) with new software.

MODELS:

2012 (DJ) Ram Pick Up (2500)

2012 (D2) Ram Pick Up (3500)

NOTE: This bulletin applies to D2/DJ vehicles equipped with a 6. 7L Cummins engine

(Sales code ETJ).

SYMPTOM/CONDITION:

Pickup trucks equipped with a 6. 7L Cummins diesel have software

improvements/enhancements available for the following DTC's:

· P049D - EGR CONTROL POSITION EXCEEDED LEARNING LIMIT

· P2002 - DIESEL PARTICULATE FILTER EFFICIENCY BELOW THRESHOLD (for

NUMBER: 18-013-12

GROUP: Vehicle Performance

DATE: March 17, 2012

high altitude failures)

· 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

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:

· Correct water in fuel (WIF) parameter to wiTECH

· ScanTool may report a code as stored, even though the fault has been cleared by

completing a significant number of drive cycles without a repeat occurrence.

· Active codes not always displayed correctly

· Engine derate with IOD removed. This will help prevent turbo damage due to oil

thickening in cold climate start up on new vehicles in transit.

· Scan tool readiness reporting issues

· Other driveability enhancements.

· EGR Valve cleaning and monitoring enhancements to help reduce occurrences of

P049D

· Erroneous, brief brake lamp flash at key on

· Improve EVIC message regarding idle shut down

· Ability to read EGR valve gap on wiTECH (version 12. 02)

 

[Regcabguy]

I don't know how you tech's keep this stuff straight in your heads. You guys are amazing.

 

[Grmoore1964]

That's some great info - thanks! I've driven it about a tankful unloaded since the reflash and I could swear I'm getting about . 5 mpg better. It doesn't seem to go into regen as often. Possible?