Intake Air Temperature Sensor 2
This code indicates a problem with the intake air temperature sensor 2 circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The intake air temperature sensor measures how hot or cold the air coming into the engine is. If it's reading wrong, the engine won't know how to mix air and fuel properly, which can affect performance.
What the computer is actually seeing
The engine control module (ECM) looks for a voltage signal from the intake air temperature sensor 2, which usually sends a voltage between 0.5V (cold air) and 4.5V (hot air). If the voltage is out of this expected range, the code is triggered.
What a healthy reading looks like
A properly functioning intake air temperature sensor should provide a voltage that changes according to air temperature, typically between 0.5V to 4.5V. For example, at 0°C (32°F), it should be around 2.5V.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the wiring and connectors for the intake air temperature sensor 2. Look for corrosion, loose connections, or damage.
- 2Using a multimeter, measure the voltage at the sensor's connector with the engine running. Check whether the voltage falls within the expected 0.5V to 4.5V range.
- 3If the voltage is outside the expected range, replace the intake air temperature sensor 2. If the voltage is within range, look for issues in the engine control module (ECM) or related circuits.
Common causes
- Faulty intake air temperature sensor 2
- Wiring issues or damaged connectors in the sensor circuit
- ECM software glitch
- Poor engine grounding
- Air intake obstruction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe to drive, but you may notice reduced engine performance or increased emissions until it's fixed.
Will this code clear itself?
If the underlying issue is resolved, the code may clear itself after several ignition cycles.
Why does this code sometimes pair with other codes?
Multiple codes can indicate related issues, like other sensor failures or wiring problems in the same circuit.
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