GMC Sierra
B0414
The B0414 code is a diagnostic trouble code (DTC) indicating an issue with the HVAC (Heating, Ventilation, and Air Conditioning) system in a GMC Sierra T1XX (2019-Present). Specifically, it relates to a malfunction in the rear temperature sensor circuit.
1 SolutionB-CodeBody
B
Error Code Type
Body
Components
1 affected
HVAC
Symptoms
5 common
- •Inconsistent or incorrect rear temperature readings
- •Rear HVAC system not functioning or not responding
- •Check engine light illuminated
- +2 more
Most Affected Generations
1 generation
T1XX
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 B0414 across all generations.