PassoFix

P0110 (blink 43) on Toyota Passo (KGC10): Intake Air Temperature (Iat) Sensor Circuit Malfunction

Short answer: P0110 means “Intake Air Temperature (Iat) Sensor Circuit Malfunction”. The car’s computer has found a fault in the Engine control (EFI) system and turns on the Check engine light (MIL). First check: are the signals from the intake manifold pressure/intake air temperature integral type sensor (Intake air temperature sensor section) inputted to the EFI ECU?.

Code
P0110 · blink 43
System
Engine control (EFI)
Dashboard light
Check engine light (MIL)
Also sold as
Daihatsu Boon, Daihatsu Sirion (M300)
Applies to
1KR-FE: M300 (Sirion export = JDM Boon M300S/M301S(4WD? see gaps) & Passo KGC10/KGC15). JDM-spec ECU not separately documented | K3-VE: M301 (Sirion 1.3 = JDM Boon M310S? / Passo QNC10)
Confidence
high (factory manual, export spec)
Source
carmanualsclub.com

Symptoms and when it is set

  1. When the signals from the manifold absolute pressure/intake air temperature integral type sensor (Intake air temperature sensor section) are not outputted continuously after starting over a certain length of time:

Likely causes

  1. Open wire or short circuit in the Manifold absolute pressure, intake air temperature integral type sen- sor (Intake air temperature sensor section) circuit
  2. Manifold absolute pressure, intake air temperature integral type sensor (Intake air temperature sensor section)
  3. EFI ECU

What to check, in order

  1. Are the signals from the intake manifold pressure/intake air temperature integral type sensor (Intake air temperature sensor section) inputted to the EFI ECU?
  2. Is the harness between the manifold absolute pressure/intake air temperature integral type sensor (Manifold absolute pressure sensor sect

Related on this car

Same code on other cars

← P0105/31 P0115/42 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.