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P2146 Diagnostic Trouble Code Discussion for April 2011

Injector Positive Voltage Relay Circuit Group 1 (Injectors 1 & 4)

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Trouble Ticket Help Requests for DTC P2146
Help Request Posted
2007 Chevrolet C5500 Kodiak C5C042 6.6L Misfire, MIL Lamp on, low power VIN: 1GBE5C1247
P2146: Injector positive volts Group 1 14 cylinders. ... put in a request, but I get alot of help from this site with the posts! I am needing help on this Duramax. This is one of my towing companys truck which he bought used and has had a history of problems with the injector circuits. In the past when we had th...
April 15, 2011
2006 Dodge Ram 3500 SLT 5.9L MIL Lamp on VIN: 3D7LX38C06
P2146: Fuel injector group 1 supply voltage circuit open. This truck came in with the above codes, ran fine but had check engine light on. Customer stated he experienced a misfire for a short time - shut vehicle off went and ate lunch, came out and truck ran fine. Mil still came on at extended idle. I replaced #3 fue...
April 22, 2011