Toyota Highlander
B1234
The Toyota Highlander XU70 (2020-Present) has a check engine light illuminated, accompanied by diagnostic trouble code (DTC) B1234.
2 SolutionsB-CodeBody
B
Error Code Type
Body
Components
2 affected
ElectricalHVAC
Symptoms
9 common
- •Check engine light illuminated
- •Possible loss of vehicle features related to the affected system
- •Inconsistent operation of electrical components
- +6 more
Most Affected Generations
1 generation
XU70
2
Top Affected Components
2 components
Electrical
1
HVAC
1
Severity Levels
1 level
medium
2
Quick Facts
2
Total Solutions
2
Affected Components
9
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code B1234 across all generations.
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