DTC P0112-00: IAT Sensor No. 1 Circuit Low Input: Notes

DTC DETECTION DESCRIPTION

DTC P0112:00	IAT sensor No. 1 circuit low input
DETECTION CONDITION	The PCM monitors the IAT sensor No. 1 signal. If the PCM detects that the IAT sensor No. 1 voltage at the PCM terminal 2U is below 0.2 V for 5 s, the PCM determines that the IAT sensor No. 1 circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. Inhibits the fuel cut control during shift change.
POSSIBLE CAUSE	MAF sensor/IAT sensor No. 1 connector or terminals malfunction IAT sensor No. 1 malfunction PCM connector or terminals malfunction Short to ground in wiring harness between MAF sensor/IAT sensor No. 1 terminal A and PCM terminal 2U IAT sensor No. 1 signal circuit and ground circuit are shorted to each other PCM malfunction