HVAC Control Module Sensor Calibration Error
The HVAC control module detected a calibration error with its sensors.
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 system that controls your car's heating and cooling can't get the right readings from its sensors, which can cause your climate control to malfunction.
What the computer is actually seeing
The HVAC control module notices a mismatch in expected offsets or calibration values for its sensors compared to default values stored in memory.
What a healthy reading looks like
Temperature sensors should typically read between 0°C to 50°C (32°F to 122°F). Mode and blend door positions should respond within milliseconds when adjusted.
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 to the HVAC sensors for damage or corrosion. Are they intact? (YES: Go to step 2; NO: Repair or replace as necessary)
- 22. Measure the voltage at the temperature sensors. Is it within 0.5V of expected values? (YES: Go to step 3; NO: Replace faulty sensor)
- 33. Check HVAC control module for stored codes. Are there other related codes present? (YES: Investigate those codes; NO: Recalibrate or replace the HVAC control module)
Common causes
- Failed temperature sensor
- Damaged wiring or connector to the sensor
- HVAC control module has internal failure
- Calibration data corrupted due to a power glitch
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive my car with this code?
Yes, but the climate control may not work properly, which can affect comfort.
Is this likely to come back after clearing it?
If the underlying issue isn't fixed, yes, it will likely return.
Why does this code always pair with other HVAC codes?
Those codes often indicate related sensor or module issues that can all affect the HVAC system's functionality.
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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