Intake Air Temperature Sensor Out of Range
The intake air temperature sensor is reading outside its expected 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 computer thinks the air temperature coming into the engine is way too high or way too low, which can mess up the engine's air-fuel mix.
What the computer is actually seeing
The ECU expects the intake air temperature to be between -40°C and 125°C (-40°F to 257°F). If it sees something like -50°C (-58°F) or 150°C (302°F), it triggers this code.
What a healthy reading looks like
Intake air temperature should be between -40°C to 125°C (-40°F to 257°F) during normal operation.
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 intake air temperature sensor wiring for damage or corrosion.
- 2Measure the voltage at the sensor connector; it should be between 0.5V to 4.5V depending on temperature.
- 3If the wiring is okay, replace the intake air temperature sensor and retest.
- 4If the code persists, check for air intake leaks that may affect sensor readings.
Common causes
- Faulty intake air temperature sensor
- Wiring issues or corroded connectors
- Unusual extreme temperatures in the intake air
- Faulty Engine Control Unit (ECU)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but the engine may run inefficiently, affecting fuel economy.
Will this code come back after clearing?
If the issue isn't fixed, the code will likely return.
Why does this code pair with SPN 6768?
They both relate to temperature readings; one might point to a specific issue like the sensor or circuit.
Working a real vehicle right now?
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