Intake Air Temperature Sensor 2
Intake air temperature sensor 2 reading is out of range.
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 engine control unit (ECU) thinks the second intake air temperature sensor is giving readings that are too high or too low, which can affect engine performance.
What the computer is actually seeing
The ECU is monitoring the voltage output from the intake air temperature sensor 2. It expects a voltage range of 0.5 to 4.5 volts corresponding to an intake air temperature between -40°C to 125°C (-40°F to 257°F).
What a healthy reading looks like
0.5V - 4.5V for intake air temperature -40°C to 125°C
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.
- 11. Check for any visual signs of damage to the intake air temperature sensor 2 wiring and connector. Repair as necessary. Do you see damage? If yes, fix it; if no, proceed to step 2.
- 22. Using a scan tool, check the live data for the intake air temperature sensor 2. What is the voltage reading? If it is out of expected range (0.5V - 4.5V), proceed to step 3; if within range, the sensor is likely good.
- 33. Disconnect the intake air temperature sensor 2 and measure the resistance across the sensor terminals with a multimeter. Is it within the manufacturer specifications? If yes, ECU may be at fault; if no, replace the sensor.
- 44. Reconnect the intake air temperature sensor and check for codes again. If the same code exists, replace the sensor; if not, the issue is resolved.
Common causes
- Faulty intake air temperature sensor 2
- Open or shorted wiring in the sensor circuit
- Bad connector or corrosion at the connector
- Engine air filter restriction
- ECU failure
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, it's drivable but performance may be compromised and fuel efficiency can drop.
Will this code come back after clearing?
If the underlying issue isn't fixed, yes, it will likely return.
Why does this code show up with other codes?
Often, one sensor failure can cause multiple related sensor codes to trigger, like the primary intake sensor.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →