Mitsubishi FGC25N:
Error Code 43

Hello I would like to know what "E43" is for

Mitsubishi
FGC25N
AF82F30***

any info would be helpful

Thanks!
  • Posted 5 Mar 2013 04:19
  • Discussion started by digitalpnk
  • Ontario, Canada
Showing items 1 - 2 of 2 results.
Thank you for the response Swoop
You mentioned that you need a handheld scan tool or the diagnostic laptop software. Dealers here in Canada won't sell those things to outside people. You know of any places in the US that provide these ? Please any info would be greatly appreciated.
Maybe you could help me out? Check my signature for my email addy. Could you send me some information there? a part number or a place where I would be able to order those things from.

thanks again !
  • Posted 7 Mar 2013 07:04
  • Reply by digitalpnk
  • Ontario, Canada
email me : cprf4u@gmail.com
hello,
it seems mitsubitshi has an hpk bulletin out on this DTC
(so does caterpillar)

the code is set because there is error in LPG air/fuel ratio reading

when truck enters closed loop operation the 02 sensor does not read correctly for a predetermined amount of time and sets the DTC code E-43 and sets the LPG system back to open loop operation. This condition will remain till the cause of the problem is found and corrected.

Now further on in their explanations they refer to the Main Fuel Injector as being the issue because of incorrect injection pulse.

They recommend replacing the LPG main injector, then recheck system and run a FAST TAS relearn and then monitor output of injector pulse and 02 sensor readings. (You WILL need the handheld scan tool or the diagnostic laptop software to perform this task.)

All should return to normal once this is done.

Now what you can try is to clean the main injector first with some non-corrosive cleaner like electrical cleaner and then recheck the system, it could be the injector is just dirty. But if this does change the problem or makes it go away it strongly recommend replacing the main injector anyway, once they start malfunctioning even cleaning doesnt last so replacement generally happens anyway.


good luck
  • Posted 5 Mar 2013 21:21
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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