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P1291 Diagnostic Trouble Code Discussion for March 2009

CNG Pressure Sensor Circuit Low Voltage


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Trouble Ticket Help Requests for DTC P1291
Help Request Posted
1999 Dodge Ram 2500 Truck 5.9L MIL Lamp on VIN: 1B7KF2361X
P1291: No Temperature Rise Detected From The Intake Heaters. ... Truck came in Friday, MIL light on and DTC P1291, Intake heater malfunction. Using MODIS Trouble shooter, suggested running both heater circuits, one at a time and observing a .5 volt drop on battery. Doing first circuit, could hear clear and loud a solino...
March 09, 2009
1999 Dodge Ram 2500 Truck 5.9L MIL Lamp on VIN: 1B7KF2361X
P1291: No Temperature Rise Detected From The Intake Heaters. ... Truck came in Friday, MIL light on and DTC P1291, Intake heater malfunction. Using MODIS Trouble shooter, suggested running both heater circuits, one at a time and observing a .5 volt drop on battery. Doing first circuit, could hear clear and loud a solino...
March 09, 2009