C1780
Temperature Select Switch Failure
C1780 is an OBD-II diagnostic trouble code meaning: Temperature Select Switch Failure. Common causes: temperature switch malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of climate control
- Lack of response to temperature changes
- Temperature stuck at one value
Causes
- Temperature switch malfunction
- Open or short circuit in wiring harness
- Problems with the climate control unit
How to Fix
- Check the temperature switch for mechanical damage
- Check the integrity of the wiring harness connected to the switch
- Scan the climate control control unit for errors
- Replace temperature switch if necessary
Related codes
FAQ
What does the C1780 code mean?
C1780 is an OBD-II diagnostic trouble code that indicates: Temperature Select Switch Failure
What causes a C1780 error code?
The most common causes of C1780 include: Temperature switch malfunction; Open or short circuit in wiring harness; Problems with the climate control unit.
How do I fix a C1780 diagnostic trouble code?
To fix C1780: Check the temperature switch for mechanical damage. Check the integrity of the wiring harness connected to the switch. Scan the climate control control unit for errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1780?
Limited driving only, diagnose soon
How much does it cost to fix C1780?
The estimated repair cost for C1780 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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