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P0540 Diagnostic Trouble Code Discussion for December 2019

Intake Air Heater Feedback Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0540
Help Request Posted
2007 Chevrolet Silverado 2500 HD Classic LS 6.6L MIL Lamp on VIN: 1GCHK23D77
P0540: intake air heater feedback circuit fault. im getting a code p0540 air intake heater circuit fault and I cant seem to find a troubleshooter for this code. it sets the code on second ignition cycle. so I first check the air heater voltage on scan date and it was showing 0.0 volts. and said ( fault...
December 13, 2019