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Experience:  30 yrs experience ase cetified tech shop owner
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05 Duramax code P2149 and P202 i understand 202 is injector ckt #2

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05 Duramax code P2149 and P202 i understand 202 is injector ckt #2 . what about P2149?
Submitted: 5 years ago.
Category: Chevy
Expert:  Chevy expert replied 5 years ago.

Welcome to just I'm here to help you and your 100% satisfaction is my goal.But this is most commonly caused by a faulty wiring harness there are many service bulletins and inspect the harness very carefully an replace the connectors at the end or repair any chafing that you find Inspect for wire harness chafes on the Fuel Injection Control Module wiring harness retaining bracket. Clear trouble codes then wiggle-test the related injector connectors to see if the trouble codes can be repeated. If the harness checks OK, replace the affected injector connector pigtail per bulletin



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Customer: replied 5 years ago.
so is the problem you think more in the wires than a bad injector or the wires are more common?
Expert:  Chevy expert replied 5 years ago.
Most likely you just have a lot of wiring problems that is much more common