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Honda Fit/Jazz - DTC Troubleshooting: P0112 (10-1) (5MT)

DTC Troubleshooting: P0112 (10-1)

DTC P0112 (10-1): IAT Sensor Circuit Low Voltage


1.Turn the ignition switch ON (II).

2.Check the IAT with the scan tool.

Is 150°C (302°F) or higher (or H-Limit in Honda mode of PGM Tester) or 0 V indicated?


YES - Go to Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.n

9.Check the temperature reading on the scan tool.
Be aware that if the engine is warm, the reading will be higher than ambient temperature. If the engine is cold, the IAT and ECT will have the same value.

Is the correct ambient temperature indicated?


YES - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the IAT sensor and at the ECM/PCM.n


NO - Replace the IAT sensor.n

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