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P1112 Diagnostic Trouble Code Discussion for December 2005

IAT Sensor Circuit Intermittent Low Voltage

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Trouble Ticket Help Requests for DTC P1112
Help Request Posted
2000 GMC K3500 Sierra SLT 7.4L MIL Lamp on VIN: 1GTHK33J7Y
P1112: IAT Sensor Circuit Intermittent Low Voltage. fault code #po112 and p1112 are stored in memory. iat temp. reading goes to 300 and voltage drops to zero. have tried new iat sensor and checked wiring at sensor. does not fail all of the time. seems to do it more on acceration when warm. any ideas. thanks in ...
December 16, 2005