Interior Temperature Sensor Circuit Range/Performance Problem
There's an issue with the interior temperature sensor 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 interior temperature sensor is supposed to measure how hot or cold it is inside the vehicle. If it shows a number that's too high or too low, it means there's a problem with the sensor or its wiring.
What the computer is actually seeing
The body control module (BCM) checks the voltage signal from the interior temperature sensor, which should fluctuate between 0.5V to 4.5V based on temperature changes.
What a healthy reading looks like
0.5V (20°F) to 4.5V (130°F) from the sensor under normal conditions.
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.
- 1Inspect the wiring and connector for any visible damage or corrosion. Repair as needed.
- 2Measure the voltage at the sensor connector with the key on (engine off). Expected should be between 0.5V and 4.5V. If out of range, go to step 3.
- 3Replace the interior temperature sensor if the voltage is faulty. If it's good, go to step 4.
- 4Check the BCM for any updates or faults that may need addressing. If the problem persists, consider replacing the BCM.
Common causes
- Wiring issue or short circuit in the sensor circuit
- Faulty interior temperature sensor
- Corroded or loose connectors
- BCM software issue
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's generally safe, but climate control may not work properly until fixed.
Will this code come back after clearing?
If the underlying cause isn't fixed, yes, the code will likely return.
Why does it pair with other sensor codes?
Multiple sensors often use the same wiring or modules, causing related codes.
Working a real vehicle right now?
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