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P0093 Diagnostic Trouble Code Discussion for June 2010

Accelerator Pedal Position Sensor 5-Volt Supply Circuit

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Trouble Ticket Help Requests for DTC P0093
Help Request Posted
2001 GMC Sierra 2500 HD SLE 6.6L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1GTHK23101
P0093: fuel rail pressure does not match commanded pressure. ... with a P0093 code. It has a performance box from edge. It has had this ongoing code for the last 3 years. I have installed a lift pump and new filters and now have a positive 9psi head pressure. The truck was good for about a month and now has the same cod...
June 17, 2010