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

DETECTION CONDITION AND POSSIBLE CAUSE

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 0.19 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 (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Illuminates the Charging system warning light. 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 Short to ground in wiring harness between MAF sensor/IAT sensor No.1 terminal A and PCM terminal 2U PCM connector or terminals malfunction IAT sensor No.1 signal circuit and ground circuit are shorted to each other PCM malfunction