P0088 code - Diesel Bombers

Chevy/GMC Duramax 2011 LML Discussion of Chevy and GMC Trucks with LML Duramax Turbo Diesel Engines

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Old 11-11-2013, 07:53 PM
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Join Date: Nov 2013
Posts: 1
Default P0088 code

I am getting this P0088 code every few days that states "Fuel Rail/System Pressure--Too High."
On the older model Duramax's a few people changed the Fuel Pressure Regulator and this took care of the problem.
What needs to be done to correct this problem?
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Old 09-01-2015, 06:24 PM
Join Date: Sep 2015
Posts: 5

Most times I've seen p0088 its been with a P0191. Usually the cause for that is rubbed wires behind the A/C compressor grounding out onto the A/C compressor. However if the condition keeps returning and its only p0088 and its doing it while your sitting at idle then it will be the number 2 fuel pressure regulator.
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