Toyota Highlander
B1242
The diagnostic trouble code (DTC) B1242 indicates a malfunction related to the air conditioning (A/C) system's refrigerant temperature sensor in a 2020-present Toyota Highlander XU70.
4 SolutionsB-CodeBody
B
Error Code Type
Body
Components
2 affected
HVACElectrical
Symptoms
10 common
- •Check engine light illuminated
- •A/C system not cooling effectively
- •A/C compressor cycling on and off frequently
- +7 more
Most Affected Generations
2 generations
XU70
2
XU50
2
Top Affected Components
2 components
HVAC
3
Electrical
1
Severity Levels
1 level
medium
4
Quick Facts
4
Total Solutions
2
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 4 of 4 solutions for error code B1242 across all generations.
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