Body
Definition only
B0305: HVAC Sun Load Sensor Circuit
Standardized SAE J2012 code · B03xx codes
What does B0305 mean?
A fault has been detected in the sun load sensor circuit used by automatic climate control to compensate for solar gain.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
- High Sun load sensor failure
- Medium Open wire in dashboard
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of B0305 on the same make and model first.
B0305 in the community
Ask about B0305No one has posted about B0305 yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your B0305 problem