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My bowtie 08-18-2010, 10:59 AM 07 LMM. Truck is bone stock, and engine light came on. Took it to local shop to read and reset codes. P2003 is Exhaust sensor temp sensor 2 circuit high voltage. What caused the code and how to fix?? would not reset and engine light still on. Ron Nielson 08-18-2010, 04:22 PM PM sent. Looks like it could be that your DPF needs to be cleaned, or your EGT sensor #2 replaced or even possibly ECM needs to be replaced, all conditioned on the circuits transmitting the info are in good shape. My bowtie 08-19-2010, 04:41 PM Pm sent back to ya...Looks like a trip to the dealer or quick loose the dpf and get a programmer. Ron Nielson 08-19-2010, 05:19 PM PM sent I need your email address so I can send info. | ||