Duramax Diesels Forum Truck of the Week
  #1  
Old 09-22-2018, 07:40 AM
Philv's Avatar
Philv Philv is offline
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Join Date: Jan 2018
Location: Surprise, AZ
Posts: 113
Default Just got a new code

My truck has never thrown this code till now. P0234 I'm not pulling a trailer, wasn't hard on the throttle, and my boost gauge read 18-20psi. I just got to the the top of a 6% climb and egts were holding at 1k. What in the would could've happened for it to throw that? And yes my truck isn't tuned yet. Saving for efi live.
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2001 GMC Sierra 2500HD SLE EC/LB 4x4
LDS 45% SAC injectors
Airdog 4G 165 lift pump
Cold air intake
4" straight exhaust 6" tip
PPE boost valve
Glowshift gauges
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  #2  
Old 09-22-2018, 08:15 AM
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PureHybrid PureHybrid is offline
Isuzu Shakes IT
 
Join Date: Feb 2012
Location: Central OH
Posts: 2,210

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Over boost?

Try and take the PPE valve out. My buddies truck kept throwing an over boost code with 30% injectors on his stock tune, no boost valve even. Kind of forced him to tune it.
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04 GMC ECSB LLY - Mix breed trans/SC1056 - Profab - PPE - Kennedy twin pumps/pickup - Danville tuning: 531/944
I can't complain, but sometimes I still do
8.17@84mph 1/8mi
Jesse
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  #3  
Old 09-22-2018, 08:38 AM
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zakkb787 zakkb787 is online now
<thatís not me...
 
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Location: Granite Falls NC
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With pure hybrid here. The truck probably isnít running 100% as it is from the different style injectors flowing larger amounts. Coupled with more boost than it generally thinks it should see.
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2006 LLY CC/SB LT3 mostly stock

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1982 K10 6.2 Detroit diesel/sm465/np205 with 4 inch lift and 35s. Fixed and driving again
2011 Yamaha YFZ450X
2003 Yamaha YZ250
2003 Kawasaki Z1000
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