What causes B0413 on a Chevy?

Failed position feedback sensor in the driver side left temperature actuator Open or short in the left temperature feedback circuit Corroded driver side actuator connector Driver side air mix door binding and stalling the actuator Faulty feedback input in the HVAC control module

How do I fix B0413 on a Chevy?

Confirm the code with a scan tool Inspect and reseat the driver side actuator connector Test the left temperature feedback circuit for opens and shorts Command the driver side door and compare commanded position to feedback Replace the actuator or HVAC control module only after circuit tests pass, then clear the code and retest

Code

B0413

Left temperature feedback circuit malfunction

Q: What does B0413 mean on a Chevy?

B0413. Left temperature feedback circuit malfunction. The HVAC module cannot confirm the driver side door position and the body warning light comes on. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code
Related: No single generic twin. See OBD Codes List

What it means

B0413. Left temperature feedback circuit malfunction. The HVAC module cannot confirm the driver side door position and the body warning light comes on. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Failed position feedback sensor in the driver side left temperature actuator
Open or short in the left temperature feedback circuit
Corroded driver side actuator connector
Driver side air mix door binding and stalling the actuator
Faulty feedback input in the HVAC control module

Standard procedure

Confirm the code with a scan tool
Inspect and reseat the driver side actuator connector
Test the left temperature feedback circuit for opens and shorts
Command the driver side door and compare commanded position to feedback
Replace the actuator or HVAC control module only after circuit tests pass, then clear the code and retest

Look up another code

Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.

Sources and review

Review: checked against the recorded source material.

Code B0413 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0413
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0413 CHEVROLET Temperature Control 1 Feedback Circuit | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes for B0413
Fetched directly. Model and year fitment remain curator claims.
B0413 CHEVROLET Temperature Control 1 Feedback Circuit | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes for B0413
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

Report a correction for B0413. Include your vehicle, the issue and a source if you have one.