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DTC P0112 - INTAKE AIR TEMPERATURE (IAT) SENSOR LOW VOLTAGE INPUT Honda Civic VI

Testing & Diagnostics ~183 words
  1. Turn ignition on. Check IAT sensor using OBD-II scan tool. If 302°F (150°C) or more is displayed, go to next step. If ambient air temperature is displayed (temperature will be higher if engine is warm), failure is intermittent. System is okay at this time. Check for poor connections or loose wires at IAT sensor connector and PCM 16-pin connector "D". See «WIRING DIAGRAMS»(ref-16355) article. If ambient air temperature is not displayed, replace IAT sensor.
  2. Disconnect IAT sensor. Check IAT sensor using OBD-II scan tool. If 302°F (150°C) or more is displayed, go to next step. If 302°F (150°C) or more is not displayed, replace IAT sensor.
  3. Turn ignition off. Disconnect PCM 16-pin connector "D". (Схема №4) Check for continuity between ground and IAT sensor connector terminal No. 2 (Red/Yellow wire). If continuity exists, repair short in Red/Yellow wire between IAT sensor and PCM 16-pin connector "D" terminal D8. See «WIRING DIAGRAMS»(ref-16355) article. If continuity does not exist, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

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