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Fuel Economy Increase after 14E02 PCM Update???


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14 replies to this topic

#1 OFFLINE   Plus 3 Golfer

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Posted 02 March 2015 - 11:07 AM

On January 7, 2015 I had the 14E02 update done which required reprogramming the Power Control Module (PCM).   Since that time my last 3 tanks of fuel (over 1500 miles) showed an increase in FE of over 2 mpg / over 5%.  In addition, the difference between the fill up FE and the displayed FE has narrowed.   For example, on the last tank I filled up at 514 miles and 11.30 gallons of fuel for a calculated average of 45.5 mpg.  The display showed 45.7 mpg. I would have expected around 43 mpg actual with a displayed of around 44 mpg.   I'm also noticing that on typical normal trips, the displayed FE has been around 5% above what I would have expected based on previous experience.

 

I will continue to monitor and compare FE as we get into the summer period.

 

IMO, something has changed and it isn't driving style.  Has anyone else noticed a FE improvement after any recent PCM update (not just due to 14E02).  I would not be surprised if Ford has tweaked the PCM software further enhancing FE.  The PCM module info from FORscan is below.  I assume the "strategy" (likely last two letters) is an indication of the revision level.  Could others check what their strategy shows.

 

PCM - Powertrain Control Module
Part number: DM5A-12A650-DD
Strategy : DM5A-14C204-DN

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#2 OFFLINE   SStoner

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Posted 02 March 2015 - 12:06 PM

The part number is the cal ID.



#3 OFFLINE   ptjones

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Posted 02 March 2015 - 02:28 PM

 

On January 7, 2015 I had the 14E02 update done which required reprogramming the Power Control Module (PCM).   Since that time my last 3 tanks of fuel (over 1500 miles) showed an increase in FE of over 2 mpg / over 5%.  In addition, the difference between the fill up FE and the displayed FE has narrowed.   For example, on the last tank I filled up at 514 miles and 11.30 gallons of fuel for a calculated average of 45.5 mpg.  The display showed 45.7 mpg. I would have expected around 43 mpg actual with a displayed of around 44 mpg.   I'm also noticing that on typical normal trips, the displayed FE has been around 5% above what I would have expected based on previous experience.

 

I will continue to monitor and compare FE as we get into the summer period.

 

IMO, something has changed and it isn't driving style.  Has anyone else noticed a FE improvement after any recent PCM update (not just due to 14E02).  I would not be surprised if Ford has tweaked the PCM software further enhancing FE.  The PCM module info from FORscan is below.  I assume the "strategy" (likely last two letters) is an indication of the revision level.  Could others check what their strategy shows.

 

PCM - Powertrain Control Module
Part number: DM5A-12A650-DD
Strategy : DM5A-14C204-DN

 

Were you notified by mail on this and when did you get it? I'm going have to check FORD Service Manager on this. :)

 

Paul



#4 OFFLINE   SnowStorm

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Posted 02 March 2015 - 05:33 PM

The same here except for letters on the end:

 

PCM - Powertrain Control Module
Part number: DM5A-12A650-KA
Strategy : DM5A-14C204-TA
 
Nothing has been changed in over a year when I had a 12V battery problem and I think something got changed then.  Had the mileage upgrade in Aug '13 - car built Apr '13.


#5 OFFLINE   Plus 3 Golfer

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Posted 02 March 2015 - 08:15 PM

For those that don't know the reason for the recall it is:

 

REASON FOR THIS EMISSION RECALL

In some of the affected vehicles, the On-board Diagnostic (OBD-II) system may be inhibited when Diagnostic Trouble Code (DTC) P24BC is set by the Powertrain Control Module (PCM). When DTC P24BC is set, the Malfunction Indicator Lamp (MIL) will not illuminate to alert the driver of a potential impact to vehicle emission control systems.



#6 OFFLINE   Plus 3 Golfer

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Posted 02 March 2015 - 08:23 PM

Were you notified by mail on this and when did you get it? I'm going have to check FORD Service Manager on this. :)

 

Paul

Yes, I got a letter in the mail in Oct / Nov 2014 and finally took it in.

 

P24BC - EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent


Edited by Plus 3 Golfer, 02 March 2015 - 08:27 PM.


#7 OFFLINE   ptjones

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Posted 02 March 2015 - 10:31 PM

Thanks for the update.

Paul

#8 OFFLINE   Plus 3 Golfer

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Posted 03 March 2015 - 08:09 AM

SnowStorm, here's the entire list of my modules from FORScan.  How does yours compare?  I note some have a Calibration # shown also.

 

Interface: 
IP: 192.168.0.10
Port: 35000
Adapter: ELM327 v1.5
Min.delay: 113 ms ( Bad)
 
Vehicle: 
Model: Ford C-MAX
Engine: Full Hybrid Electric Vehicle
Capacity: 2.0L
Year: 2013 MY
VIN: 1FADP5BU3DLXXXXXX
 
SOBDMC - Secondary OBD Control Module C
Part number: DM58-7P120-ED
Calibration: MCBG4-EDEA
 
BECM - Battery Energy Control Module
Part number: FM58-10B687-AH
Strategy : FM58-14C197-CC
 
PCM - Powertrain Control Module
Part number: DM5A-12A650-DD
Strategy : DM5A-14C204-DN
 
OBDII - On Board Diagnostic II
 
APIM - Accessory Protocol Interface Module
Strategy : DM5T-14D205-AF
 
ACCM - Air Conditioning Control Module
Part number: DG9H-19F611-AB
Strategy : DG9H-14D491-AB
 
SASM - Steering Angle Sensor Module
Strategy : DV6T-14C309-AB
 
OCS - Occupant Classification System Module
Part number: DM51-603B16-DE
Strategy : DM51-14F595-DC
Calibration: DM51-14F596-DD
 
ABS - Anti-Lock Brake / Traction Control Module
Strategy : FV68-2D053-CB
 
DCDC - DC to DC Converter Control Module
Part number: FM58-14B227-AF
Strategy : FM58-14D459-AH
 
RCM - Restraint Control Module
Part number: DM5T-14B321-EF
Strategy : CJ5T-14C028-AH
Calibration: DM5T-14C098-EH
 
PAM - Parking Aid Module
Part number: CJ5T-15K866-AE
Strategy : CJ5T-14C090-AE
Calibration: CJ5T-14C091-AF
 
PSCM - Power Steering Control Module
Part number: CV61-3C579-AD
Strategy : CV6T-14C217-AD
Calibration: CV6T-14C218-AD
 
BdyCM - Body Control Module
Part number: BV6N-14A073-PD
Strategy : BV6N-14C094-EA
Calibration: BV6N-14C095-EA
 
GWM - Gateway Module A
Part number: CM5T-14F642-AF
Strategy : CM5T-14F530-AF


#9 OFFLINE   SnowStorm

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Posted 03 March 2015 - 04:43 PM

There are lots of differences although some are the same but I have no PAM at all! :cry: All have the Part number: and Strategy: lines, 6 also have Calibration.  Sometimes a lot of digits are different, sometimes just the last two letters.  I see your Min.delay is 113ms (Bad) where mine is 32ms (Good).  :)  Maybe some of your data is getting lost.  You would think all modules would have a part number but what do I know.  Wish we knew the meaning of the numbers and/or parts thereof.



#10 OFFLINE   Plus 3 Golfer

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Posted 03 March 2015 - 07:19 PM

There are lots of differences although some are the same but I have no PAM at all! :cry: All have the Part number: and Strategy: lines, 6 also have Calibration.  Sometimes a lot of digits are different, sometimes just the last two letters.  I see your Min.delay is 113ms (Bad) where mine is 32ms (Good).  :)  Maybe some of your data is getting lost.  You would think all modules would have a part number but what do I know.  Wish we knew the meaning of the numbers and/or parts thereof.

Thanks, changed setting in Elm 327 WIFI adapter to 10 msec from 100 msec and now get 23 msec (good) for minimum delay.  This may be why on occasion I would have gaps in the recorded data when using Dash Command.  Maybe the Forscan forum has something on the meaning of the numbers.



#11 OFFLINE   SnowStorm

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Posted 03 March 2015 - 08:19 PM

Thanks, changed setting in Elm 327 WIFI adapter to 10 msec from 100 msec and now get 23 msec (good) for minimum delay.  This may be why on occasion I would have gaps in the recorded data when using Dash Command.  Maybe the Forscan forum has something on the meaning of the numbers.

See this topic.  Looks like you found the solution already.



#12 OFFLINE   SPL Tech

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Posted 06 March 2015 - 03:57 PM

 

SnowStorm, here's the entire list of my modules from FORScan.  How does yours compare?  I note some have a Calibration # shown also.

 

Interface: 
IP: 192.168.0.10
Port: 35000
Adapter: ELM327 v1.5
Min.delay: 113 ms ( Bad)
 
Vehicle: 
Model: Ford C-MAX
Engine: Full Hybrid Electric Vehicle
Capacity: 2.0L
Year: 2013 MY
VIN: 1FADP5BU3DLXXXXXX
 
SOBDMC - Secondary OBD Control Module C
Part number: DM58-7P120-ED
Calibration: MCBG4-EDEA
 
BECM - Battery Energy Control Module
Part number: FM58-10B687-AH
Strategy : FM58-14C197-CC
 
PCM - Powertrain Control Module
Part number: DM5A-12A650-DD
Strategy : DM5A-14C204-DN
 
OBDII - On Board Diagnostic II
 
APIM - Accessory Protocol Interface Module
Strategy : DM5T-14D205-AF
 
ACCM - Air Conditioning Control Module
Part number: DG9H-19F611-AB
Strategy : DG9H-14D491-AB
 
SASM - Steering Angle Sensor Module
Strategy : DV6T-14C309-AB
 
OCS - Occupant Classification System Module
Part number: DM51-603B16-DE
Strategy : DM51-14F595-DC
Calibration: DM51-14F596-DD
 
ABS - Anti-Lock Brake / Traction Control Module
Strategy : FV68-2D053-CB
 
DCDC - DC to DC Converter Control Module
Part number: FM58-14B227-AF
Strategy : FM58-14D459-AH
 
RCM - Restraint Control Module
Part number: DM5T-14B321-EF
Strategy : CJ5T-14C028-AH
Calibration: DM5T-14C098-EH
 
PAM - Parking Aid Module
Part number: CJ5T-15K866-AE
Strategy : CJ5T-14C090-AE
Calibration: CJ5T-14C091-AF
 
PSCM - Power Steering Control Module
Part number: CV61-3C579-AD
Strategy : CV6T-14C217-AD
Calibration: CV6T-14C218-AD
 
BdyCM - Body Control Module
Part number: BV6N-14A073-PD
Strategy : BV6N-14C094-EA
Calibration: BV6N-14C095-EA
 
GWM - Gateway Module A
Part number: CM5T-14F642-AF
Strategy : CM5T-14F530-AF

 

Are you getting tranny temp, coil temp, MG1 temp, ect? You should be getting all of those too.



#13 OFFLINE   Plus 3 Golfer

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Posted 06 March 2015 - 06:27 PM

Yes, and AFAIK all PID data in the modules is available via FORScan although I haven't looked at much of it.



#14 OFFLINE   hybridbear

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Posted 09 March 2015 - 03:34 PM

Any PCM update like this recall wipes out the KAM (Keep Alive Memory). This means that all values in the learned tables are reset to default. It could be that your car had learned values previously that led to decreased fuel economy. Many FFH owners with poor fuel economy have found that their MPGs have improved after they have cleared the KAM through the hard reset procedure.



#15 OFFLINE   Plus 3 Golfer

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Posted 10 March 2015 - 10:01 AM

Any PCM update like this recall wipes out the KAM (Keep Alive Memory). This means that all values in the learned tables are reset to default. It could be that your car had learned values previously that led to decreased fuel economy. Many FFH owners with poor fuel economy have found that their MPGs have improved after they have cleared the KAM through the hard reset procedure.

True but this would presume that a) the learned values prior to reset were wrong and never updated with continual driving or b) the after reset learned values wouldn't over a tank return to the learned values prior to the reset.  This simply makes no sense as driving style / conditions haven't changed and resetting the KAM should only result in a temporary change in FE as the values would be relearned quickly.  So, IMO resetting KAM might change FE temporarily but not permanently.  Most of the learned values I know of that might affect FE relate to timing and fuel trim.

 

IMO, something has to be wrong with the hardware or software especially relating to emissions / fuel monitoring system, such that the learned values or other triggers would lead to a decrease in FE.  The recall indicates that something might be amiss with the OBDII system monitoring with no MIL indication of an emission issue.  This certainly could affect FE in affected vehicles.  I doubt Ford would ever admit that this issue might have resulted in a loss in FE. :)








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