Cabin Temperature Sensor Voltage Out of Range
Issues detected with the cabin temperature sensor signal voltage.
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 cabin temperature sensor is supposed to send a voltage to the engine control module (ECM) that represents the temperature in the vehicle's interior; if the voltage is too high or too low, it indicates a problem with the sensor or wiring.
What the computer is actually seeing
The ECM expects the cabin temperature sensor output to be between 0.5V to 4.5V depending on the temperature; if the voltage goes below 0.5V or above 4.5V, it triggers the fault code.
What a healthy reading looks like
0.5V to 4.5V based on temperature ranges (approximately 32°F to 140°F).
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 the wiring and connectors at the cabin temperature sensor for signs of damage or corrosion. Decision point: Are the connections intact? If no, repair as needed. If yes, proceed to step 2.
- 22. Disconnect the cabin temperature sensor and measure the voltage at the connector with the ignition on (engine off). You should see a voltage around 0.5V to 4.5V. Decision point: Is the voltage within range? If yes, the sensor is likely faulty. If no, check wiring and ground paths from the ECM to the sensor.
Common causes
- Faulty cabin temperature sensor
- Damaged wiring or connectors
- Poor ground connection
- Malfunctioning ECM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's generally safe to drive, but you may experience cabin heating or cooling issues.
Will this code come back?
If the underlying issue isn't fixed, the code is likely to return after clearing.
Why does this code pair with SPN 2317?
Both codes relate to temperature sensor issues, indicating multiple sensor faults or wiring problems.
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