DTC P0098-00: IAT Sensor No.2 Circuit High Input: Notes
DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0098:00 |
IAT sensor No.2 circuit high input |
| DETECTION CONDITION |
- If the PCM detects that the IAT sensor No.2 voltage at the PCM terminal 1 CE is 4.96 V or more
for 5 s
, the PCM determines that the IAT sensor No.2 circuit voltage is high.
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.
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| FAIL-SAFE FUNCTION |
- |
| POSSIBLE CAUSE |
- MAP sensor/IAT sensor No.2 connector or terminals malfunction
- PCM connector or terminals malfunction
- IAT sensor No.2 malfunction
- Short to power supply in wiring harness between MAP sensor/IAT sensor No.2 terminal B and PCM terminal 1CE
- Open circuit in wiring harness between the following terminals:
- MAP sensor/IAT sensor No.2 terminal B-PCM terminal 1CE
- MAP sensor/IAT sensor No.2 terminal A-PCM terminal 1BX
- PCM malfunction
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CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.
RELATED PIDS
| Monitor item (Definition) |
Unit/Condition |
Condition/Specification (Reference) |
| IAT2 |
°C, °F |
|
| V |
- IAT2 is 20°C {68°F}: approx. 3.57 V
- IAT2 is 40°C {104°F}: approx. 2.70 V
- IAT2 is 60°C {140°F): approx. 1.87 V
|