trouble code p1247 low boost pressure???
Apr 5, 2008 | 04:29 PM
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Senior User
Joined: Feb 2008
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From: Glenwood Springs, Co
trouble code p1247 low boost pressure???
I can't visually see any holes and all boots/clamps are tight with no tell tale soot indication....
Gauge says dumping out at between 18-20......
suggestions ????
Thank you in advance
Brian
Apr 5, 2008 | 06:07 PM
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
You are about normal with no tuner. After you get the DP you will push more boost. Turbo don't like more than 25#, I can make 30+ boost.
Apr 5, 2008 | 06:52 PM
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Senior User
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From: Glenwood Springs, Co
Thanx Rick, but why the stored low boost code???
Apr 5, 2008 | 08:04 PM
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
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From: Concord NC
FWIW, stored codes don't mean much, unless you know when it was set. Clear it, run it and see if it comes back. If not, then no worries, if it does then we can start looking.
Apr 5, 2008 | 08:18 PM
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
DH1 DIAGNOSTIC TROUBLE CODE (DTC) P0236, P1247 AND P1248
DTC P0236 indicates a turbo boost sensor A circuit performance concern.
DTC P1247 or P1248 indicate turbo boost pressure was low or not detected.
Possible causes:
damaged MAP hose
low turbo boost
intake manifold or crossover tube hose leaks
damaged MAP sensor
damaged PCM
Inspect MAP sensor hose and manifolds for damage, leaks, restriction and misrouting.
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