Code result
B0305
HVAC Sun Load Sensor Circuit
Moderate severity
What it means
A fault has been detected in the sun load sensor circuit used by automatic climate control to compensate for solar gain.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Sun load sensor failure
highOne of the most commonly reported causes for this code — check this first.
Open wire in dashboard
mediumA plausible cause — test and verify before replacing parts.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose B0305 freeNo credit card required