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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System - 4.3L (DTC P0601 To DTC P2A04)) >> Diagnosis >> DTC P0651 >> Circuit Description

Circuit Description

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The powertrain control module (PCM) provides 5 volts to the fuel tank pressure (FTP) sensor. The PCM monitors the voltage on the 5-volt reference circuit. If the voltage is out of tolerance, DTC P0651 sets.

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