Toyota Highlander
B1240
The HVAC code B1240 on your Toyota Highlander indicates a fault in the air conditioning system, specifically related to the solar sensor or its circuit.
1 SolutionB-CodeBody
B
Error Code Type
Body
Components
1 affected
HVAC
Symptoms
5 common
- •Check engine light illuminated
- •Inconsistent cabin temperature
- •Air conditioning not functioning correctly
- +2 more
Most Affected Generations
1 generation
XU70
1
Top Affected Components
1 component
HVAC
1
Severity Levels
1 level
medium
1
Quick Facts
1
Total Solutions
1
Affected Components
5
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code B1240 across all generations.
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