Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Monitor Description
The ECM perform OBD II monitoring based on the intake are temperature sensor value. If the sensor value does not vary within the normal range, the ECM cannot perform OBD II monitoring or misdiagnoses the condition as sensor's internal failure. When the ECM finds no changes in the intake air temperature sensor value by performing the monitoring after the ignition is turned ON or the engine is started, this condition will be detected (after short or long period of time).
| Related DTCs | P0111: Intake air temperature sensor rationality check |
| Required Sensors/Components (Main) | Inlet air temperature sensor |
| Required Sensors/Components (Related) | - |
| Frequency of Operation | Once per driving cycle |
| Duration | Immediately after |
| MIL Operation | 2 operation cycle |
| Sequence of Operation | None |
| Overlap prohibited DTC | P0112, P0113 (Inlet air temperature sensor) P0117, P0118, P0125 (engine coolant temperature (ECT) sensor) P0122, P0123, P0222, P0223 (Throttle position sensor) P0500 (Vehicle Speed Sensor (VSS)) P0604, P0605 (ECM ROM), P0606 P1160 (throttle return spring) P2101, P2102 (Throttle actuator control motor) P2109 (Throttle position sensor minimum stop) P2119 (Throttle actuator control) P2122, P2123, P2127, P2128 (Accelerator Pedal Position Sensor (APPS) circuit) P2135 (Throttle position sensor (TPS) degree of correlation) P2138 (Accelerator pedal position sensor (APPS) degree of correlation) |
| Battery Voltage | 10.9V or more |
| Engine coolant temperature | 60°C {140°F} or more |
| Total air induction | 6, 500g or more |
| Number of times that the following conditions (A, B) have been met: | 3 times or more |
| A. All of the following conditions are met: | (a), (b), (c) |
| (a) Time | 10 seconds |
| (b) Vehicle speed | 4km/h {2.5 MPH} or more |
| (c) Intake amount per second | 10g/s or more |
| B. All of the following conditions are met: | (a), (b) |
| (a) Time | 10 seconds |
| (b) Vehicle speed | Less than 40km/h {24.9 MPH} |
| Maximum voltage for inlet air temperature sensor - Minimum voltage for inlet air temperature sensor | Less than 0.02V |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.