P0110 · blink 24 – Intake air temperature sensor circuit

System: Engine - IAT
Dashboard light: Check engine light (MIL)
Check-engine blink code: 24
Applies to: 1SZ-FE (by platform)
Description: Intake air temperature sensor circuit
Possible causes: Trouble area: 1.Open or short in intake air temperature sensor circuit 2.Intake air temperature sensor 3.Engine computer (ECM)
What to check: Checking points: 1.Check sensor connector and wiring 2.Check sensor resistance against temperature 3.Replace sensor if out of range
Confidence: medium (Toyota Echo 1999–2002 factory diagnostics, same XP10 platform; not confirmed on JDM 1SZ-FE)

From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights