Passenger Compartment Temperature Sensor Circuit Range/Performance Problem
The sensor that measures cabin temperature has an issue with its readings.
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 car has a sensor in the cabin that checks how hot or cold it is. If this sensor gives weird readings, like it's too hot when it’s actually cool, there might be a problem with the sensor or wiring.
What the computer is actually seeing
The HVAC control module monitors the voltage or resistance from the passenger compartment temperature sensor; normal readings should vary between 0.5 to 4.5 volts depending on the temperature.
What a healthy reading looks like
Expected voltage should be around 2.5V at 72°F (22°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 the wiring and connectors at the passenger compartment temperature sensor. Look for any frayed wires or corrosion. Decision: If okay, go to step 2; if not, repair wiring/connectors.
Common causes
- Faulty passenger compartment temperature sensor
- Wiring issues or shorts in the sensor circuit
- Poor connector contacts
- HVAC control module malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but you might not have optimal climate control.
Will this code come back?
It might, if the underlying issue isn't fixed.
Why does this code trigger if the heater works?
The heater may work, but the sensor reading affects automatic temperature control.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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