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Home >> Lexus >> 1998 >> LX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic Tests >> DTC P0110: Intake Air Temperature (IAT) Sensor Circuit >> Circuit Description

Circuit Description

The IAT sensor is a thermistor built into the MAF sensor and is used to monitor temperature of air flowing through MAF sensor. DTC is set when ECM detects an open or short IAT circuit. ECM will operate in fail-safe mode if DTC P0110 is set. Possible causes are:

NOTE: If DTCs P0110, P0115, P0120, P0450 and P1120 are output together, inspect ECM terminal E2 (ground) circuit. Repair as necessary. See appropriate wiring diagram in WIRING DIAGRAMS article.
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