B27C3
PTC Outlet Air Temperature Sensor High
B27C3 is an OBD-II diagnostic trouble code meaning: PTC Outlet Air Temperature Sensor High. Common causes: ptc temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of the heating system
- Overheating of air in the cabin
- No heating
- Check Engine Light Illuminates
Causes
- PTC temperature sensor malfunction
- Open or short circuit in wiring harness
- Problems with the climate control unit
- Malfunction of the PTC heater itself
How to Fix
- Check the temperature sensor readings with a scanner
- Inspect the wiring harness for damage
- Check sensor resistance
- Replace PTC temperature sensor if necessary
- Check the operation of the PTC heater
Related codes
FAQ
What does the B27C3 code mean?
B27C3 is an OBD-II diagnostic trouble code that indicates: PTC Outlet Air Temperature Sensor High
What causes a B27C3 error code?
The most common causes of B27C3 include: PTC temperature sensor malfunction; Open or short circuit in wiring harness; Problems with the climate control unit; Malfunction of the PTC heater itself.
How do I fix a B27C3 diagnostic trouble code?
To fix B27C3: Check the temperature sensor readings with a scanner. Inspect the wiring harness for damage. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B27C3?
Limited driving only, diagnose soon
How much does it cost to fix B27C3?
The estimated repair cost for B27C3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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