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Old 08-05-2006, 07:35 PM   #1 (permalink)
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Code P0122

Ok guys...

I've got a P0122 code (APPS Voltage Low). What would you guys suggest I do before I start ripping out wiring and parts??? No problems yet but I better ask some other guru's on what to do...

Suggestions please...
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Old 08-05-2006, 10:21 PM   #2 (permalink)
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The wifes did this two days ago....accompanied by a 1693. I reset the APPS and all is well.

turn on the key and with it left on, disconnect the batt negatives for about half an hour or so to fully discharge all the capacitors in the PCM. After the elapsed time, turn off the key, hook your batteries back up then turn on the key without moving the pedal. Now slowly depress the pedal all the way to the floor and then release it slowly all the way back up. The PCM re-learns the voltage curve and your code goes away...hopefully.

Chris
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Old 08-06-2006, 11:31 AM   #3 (permalink)
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Ok... Got Diesel I'll give that a try later on this weekend if I remember with everything I'm doing...

It just mean I got to reset the clocks (Temp gauge and radio) And reprogram the temp gauge too... Arrrrrgggghhhh!

Thanks for the idea...:thumbsup
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Old 08-09-2006, 11:01 AM   #4 (permalink)
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Update...

Ok..

It seems to me that the APPS reset did the trick. It also wiped all errors out of the PCU/ECU computers even than darn ol' P1693. The batteries were disconnected for over 24 hours.

I've driven only about 50 miles but still no codes yet... So I would say that the problem is fixed.

Good going Got Diesel!!! :thumbsup
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Old 08-09-2006, 03:23 PM   #5 (permalink)
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glad to hear it. The 1693 is still present in my wife's, I figured it was a hardcode that needed to be cleared with a scanner, as no other codes are present.
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Old 10-04-2010, 09:56 AM   #6 (permalink)
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mine was acting up the other day. I'll be goin down the road and the tach will jump a couple hundred r's and drop back to normal it gets real annoying but I noticed its only when the pedal is in a certain "range" and thats around 30 to 40 mph so I took it in to a tranny shop fearing the worse he said my apps is probably to blame but didn't give me any remedy for it. well I checked the codes last night and I have the P0122 showing up. I am going to go and try your trick got......diesel and I'll let ya'll know if it worked out for me later today.
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Old 10-04-2010, 12:13 PM   #7 (permalink)
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mine was acting up the other day. I'll be goin down the road and the tach will jump a couple hundred r's and drop back to normal it gets real annoying but I noticed its only when the pedal is in a certain "range" and thats around 30 to 40 mph so I took it in to a tranny shop fearing the worse he said my apps is probably to blame but didn't give me any remedy for it. well I checked the codes last night and I have the P0122 showing up. I am going to go and try your trick got......diesel and I'll let ya'll know if it worked out for me later today.
Josh
Dug yourself up a 4 year old thread here!
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Old 10-04-2010, 02:07 PM   #8 (permalink)
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Haha I sure did...and thank god I did cured all my problems. No more annoying rpm spikes.

Josh
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Old 10-05-2010, 05:41 PM   #9 (permalink)
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Haha I sure did...and thank god I did cured all my problems. No more annoying rpm spikes.

Josh
Although you got this issue corrected, it may be an indication of your APPS heading into retirement. A new APPS from Dodge will run you around $300-$400 so what I would suggest is either find an APPS in the Classifieds section on this forum or upgrade to the TIMBO APPS. I have the Timbo Apps and although I don't notice any difference in performance, I know it is constructed much better than the OEM one.
Timbo APPS Contact Information

I only changed mine because of high mileage and didn't want to be in the middle of nowhere with APPS issues. At the bottom of that link is Timbo's website where you can order directly from him or go to Genosgarage.com and search for APPS.
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Old 03-12-2013, 07:42 PM   #10 (permalink)
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i have a 2001 5 speed cummins, I have 3 codes showing, this worked to clear the 0122 and 1694 but a third code is still showing... 1693.. help anyone?
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Old 03-12-2013, 08:02 PM   #11 (permalink)
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i have a 2001 5 speed cummins, I have 3 codes showing, this worked to clear the 0122 and 1694 but a third code is still showing... 1693.. help anyone?
P1693 codes (SOLO)
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