Question on codes p0202 and p2149 - Chevy and GMC Duramax Diesel Forum
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Old 12-05-2009, 01:07 PM   eBay Motors  #1 (permalink)
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Question on codes p0202 and p2149

Hi got a 05 3500 running really ruff and throwing 2 codes p0202. And p2149 any ideas
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Old 12-05-2009, 08:58 PM   eBay Motors  #2 (permalink)
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Number #2 injector Drive fault, incorrect current on a fuel injector circuit (the condition exists for less than 1 second)... you should have freeze frame data with this one (operating conditions). The control module will disable the fuel injector with the concern. that'll be why it's running so rough. 2149 is a sister code set with it. Seems like the 2149 code is set to show the "set" of injectors will be disabled.. that is 4 cylinders that belong to your failed injector #2 so it probably shut down #3, #5 and #8 as well. It will turn off the lamp if the problem does not occur after 3 warm up cycles and drop from history if you have no issues for 40 warm up cycles. That's if it actually come right in the first place I guess!
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Last edited by DuraMac; 12-05-2009 at 09:07 PM.
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Old 12-06-2009, 07:57 AM   eBay Motors  #3 (permalink)
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The cheap fix is to use "Ice Pick" the injector connector-common problem!
I wrote this and saved it--That problem is usually caused by a loose connector at the injector. The cheap fix that will last, is to remove the connector, place it against something flat, and push a SHARP ice pick into both terminals. This will raise a dimple inside the connector for a better contact. Do this for #2 and #7 injectors. (The cylinders are numbered from the front--- passenger side- 1-3-5-7 and the drivers side is 2-4-6-8)

Also inspect the FICM harness at the alternator for shorts and wear-through. The harness is tied down with a zip tie, gets cut and shorts by contact with the sharp corner of the bracket.

These are common problems for the LLY engine. Everyone that has a LLY should know how to do this, and have a sharp ice pick in the glove box!
Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, blocked, fingered, de-badged, PCV, 65 Gallon replacement Aero tank, PPE on 2, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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