Air Conditioning Refrigerant Temperature Sensor Circuit Range/Performance Problem
There’s an issue with the refrigerant temperature sensor in the A/C system.
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What it means (plain English)
The A/C system has a temperature sensor that measures how cold the refrigerant is. If it's reading too high or low, the computer thinks something's wrong with the A/C performance and throws this code.
What the computer is actually seeing
The engine control module (ECM) expects the refrigerant temperature sensor to read between 20°F (-6°C) and 50°F (10°C) when the system is functioning correctly. If the readings are outside this range, it triggers the B1410 code.
What a healthy reading looks like
Refrigerant temperature should ideally remain between 20°F (-6°C) and 50°F (10°C) during normal A/C operation.
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 refrigerant level in the A/C system. Refill if low, then retest.
- 22. Inspect the wiring and connectors going to the refrigerant temperature sensor for damage or corrosion.
- 33. Measure the resistance of the refrigerant temperature sensor. Should be within manufacturer specs (usually around 10k ohms at room temperature).
- 44. Test the signal at the sensor with a multimeter. Expected voltage signal should vary with temperature (0.5V to 4.5V). If out of range, replace the sensor.
- 55. If the sensor is good, check the A/C control module for faults or data inconsistencies.
Common causes
- Faulty refrigerant temperature sensor
- Wiring or connector issues in the sensor circuit
- Low refrigerant level
- A/C system refrigerant leak
- Faulty A/C control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Yes, but A/C performance may be poor. You might not feel cool air from the vents.
Will this code come back after clearing?
It's possible if the underlying issue isn't fixed.
Could this code be related to other A/C issues?
Yes, problems with the refrigerant, such as leaks or low levels, can trigger this code.
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