Rear Climate Control Sensor Circuit Range/Performance Problem
There’s an issue with the rear climate control sensor circuit performance.
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What it means (plain English)
The rear climate control sensor is failing to give correct readings, affecting temperature settings in the back of the vehicle.
What the computer is actually seeing
The climate control module expected a certain resistance or voltage from the rear sensor, which should normally operate between 0.5V and 4.5V based on temperature. It’s reading out of this range or fluctuating incorrectly.
What a healthy reading looks like
Normal operation should show a steady voltage in the 0.5V to 4.5V range corresponding to temperatures from 32°F (0°C) to 122°F (50°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. Inspect the wiring and connectors at the rear climate control sensor for damage or corrosion. If damaged, repair or replace the wiring/connector (decision: OK or replace).
- 22. Measure the voltage at the rear climate control sensor with the key on, engine off. It should be between 0.5V and 4.5V corresponding to a measured temperature. If not, replace the sensor (decision: OK or replace sensor).
- 33. Check the ground circuit for the climate control module and the rear sensor. Ensure there is continuity and the ground is clean (decision: OK or good ground).
- 44. Clear the code and perform a test drive to see if the code returns. If it doesn’t return, the issue may have been resolved (decision: fixed or persists).
Common causes
- Faulty rear climate sensor
- Damaged wiring or connectors to the sensor
- Poor ground connection
- Software issue in the climate control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but rear climate control may not function properly until resolved.
Will this code come back after clearing it?
It can, especially if there’s an underlying issue with the sensor or wiring.
Why does this code appear with other codes?
It often pairs with other climate control codes due to shared wiring or module communication.
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