Passenger Compartment Temperature Sensor Circuit Range/Performance Problem
The system has detected an issue with the temperature sensor in the passenger compartment.
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What it means (plain English)
The temperature sensor inside the car isn't reading the right temperature, which can mess with climate control and comfort settings.
What the computer is actually seeing
The body control module expects a specific resistance or voltage signal from the passenger compartment temperature sensor. If the signal is outside the expected range, it triggers this code.
What a healthy reading looks like
Normal sensor voltage should be between 0.5V to 4.5V depending on temperature; for example, at 20°C (68°F), you'll typically see 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.
- 11. Inspect the wiring and connectors for the passenger compartment temperature sensor. Look for frays, corrosion, or loose connections.
- 22. Measure the voltage at the temperature sensor connector with the ignition on and the engine off. You should see a voltage between 0.5V and 4.5V.
- 33. If the voltage is outside this range, check the sensor for resistance on a cold engine; it should typically show around 2.5K ohms at 20°C (68°F). Replace the sensor if it's out of specs.
- 44. If the sensor checks out but the code persists, review the body control module for faults. Check your wiring diagrams to ensure the module is receiving inputs correctly.
Common causes
- Faulty passenger compartment temperature sensor
- Wiring issues or shorts in the sensor circuit
- Bad connectors or corrosion
- Body control module malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it’s drivable, but climate control may not work properly.
Will this code come back after clearing it?
It may come back if the underlying issue isn’t fixed.
Why do I see this code with B3207?
They both relate to temperature sensing issues in the passenger compartment, indicating multiple sensor problems.
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