DTC P0112-00: IAT Sensor No. 1 Circuit Low Input: Notes
DTC P0112:00 (PCM, SKYACTIV-G 2.5T) 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 2AX 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 2AX
- IAT sensor No. 1 signal circuit and ground circuit are shorted to each other
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|