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Posted (edited)

It’s the 2nd time this month the check engine light has come on for this code. 
I replaced it 2 weeks ago with a new one from Cummins in el paso because I’ve been traveling, this morning the light came on again.


i thought something looked off getting on the highway today when I saw on gray smoke and a little black from the exhaust.  

is there something that is the culprit usually other than a sensor? I’ll be home late tonight or tommorow, but if I can fix it on the road that would be cool to. 

Edited by Towrigdually

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5 hours ago, Royal Squire said:

If I remember correctly I had this code one time and had a small amount of corrosion on edge ez connection 


The connection looks decent here, cleaned it up and put dielectric grease on it. No change

 

5 hours ago, Me78569 said:

I'd check your wiring if that doesn't work then remove the xzt


Unplugged the batteries and it went away for a bit. Came back. I’ll have to check the wiring when I get home. Pretty sure my scanner can do what the dtc instructions are asking so I can read voltage. 

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About an hour from hole last nights the check engine light went out after I drove through a bumpy construction zone. So that makes me think is a connection problem. The pins in the xzt looks good, and the sensor. The wiring from the sensor to the ecm looks good so maybe it’s a pin on the ecm connector or the wire itself. 

 

Does anyone know where to get the pins? The wire is easy, but are the pins Cummins specific or if it fits it’s good.

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P0237 code... MAP sensor voltage too low. 

 

I would consider unhooking the Quadzilla XZT and the reset the codes. Then go for a test drive. If the code returns then MAP sensor or wiring is the cause. If the code does not come back the Quadzilla XZT boost fooler is burned up. 

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Went to the store, light came back on. On the way home the truck didn’t want to build more than 10lbs of boost or go over 2k rpm, and was painfully slow to get there. 1st/2nd gear starting was no problem but trying to gain speed was stupid, drove home in 4th. 
unhooked the XZT and ran it around. CEL is still on but can build boost, egts are slightly lower, and can run the truck through the gears no problem with being rpm limited. 
 

hooked up scanner to clear codes and now it won’t connect to the truck. I can read the abs codes, but cant get Into the ecm to clear codes or read them. Scanner is a snappy solus pro, verified it working with the Jeep I have sitting at the house and uses the same personality key, k-13. 
 

gunna unplug the batteries again and see if that’ll clear the code. 
 

*update* I can connect to the truck specifically to clear the ecm codes, but if I enter it globally I can read and clear it. Strange.

Edited by Towrigdually

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3 hours ago, Mopar1973Man said:

Unhooking the batteries will not reset codes or any software. To reset the software turn the key off for 10 seconds. To rest codes you need to fix the problem and reset the codes with OBDII tool.


CEL went off after hooking the truck back up without XZT. Cleared the codes once i got into the truck under generic codes. 
 

but looks like I need a new tuner so next weekend I’ll see who’s having sales. I emailed  quadzilla support yesterday to see if they’ll repair the board in what I have first. 

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