Temperature control left feedback circuit actuator range fault
What it means
B0414. Temperature control left feedback circuit actuator range fault. Driver side heat control reads out of range. This Chevy-enhanced code applies to Tahoe, Suburban, Silverado with dual zone climate 2003 to 2006..
Findings, check these first
- Faulty driver side blend actuator
- Stuck blend door
- Faulty temp sensor
- Damaged actuator wiring
- Faulty HVAC control head
Standard procedure
- Test driver side temp change both ways
- Inspect blend actuator
- Test door movement by hand
- Check wiring and connector
- Replace blend actuator if weak
Look up another code
Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.
Sources and review
Review: qualified. Read the source limits below.
- B0414 CHEVROLET Temperature Control Left Feedback Circuit Actuator Range/Performance: Code Meaning, Causes, Symptoms, & Tech Notes
archived reference page (engine-codes.com via Wayback Machine)
Supports: code identity and Chevrolet application, with left side wording
Fetched directly. The Chevrolet page names the left air temperature actuator and left feedback circuit. The catalog said temperature control 2 and passenger side.
- B0414 CHEVROLET Temperature Control Left Feedback Circuit Actuator Range/Performance
archived reference page (autocodes.com via Wayback Machine)
Supports: code identity and Chevrolet application, with left side wording
Fetched directly. The second Chevrolet page repeats the left side wording and the faulty left air temperature actuator cause.
- B0414 on obdii.pro (third-source cross-check)
live reference page (obdii.pro)
Supports: temperature control feedback circuit range/performance, main or front side
Cross-check 09/26: obdii.pro lists GM B0414 as temperature control #1 (main/front) feedback circuit range/performance. It agrees the fault is the temperature control feedback circuit; main/front matches driver side on these trucks.
Source caveat: description and the side-specific cause/action changed from passenger side (temperature control 2) to left/driver side. Third source agrees on the circuit and main/front side.
Last updated 2026-09-25.
Report a correction for B0414. Include your vehicle, the issue and a source if you have one.