What does B0415 mean on a Chevy?

B0415. Left temperature feedback circuit low. The driver side door feedback reads low and the body warning light comes on. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0415 on a Chevy?

Left temperature feedback wire shorted to ground Failed position sensor inside the driver side actuator pulling feedback low Corroded driver side actuator connector Open 5V reference feed to the driver side actuator Faulty feedback input in the HVAC control module

How do I fix B0415 on a Chevy?

Confirm the code with a scan tool Inspect and reseat the driver side actuator connector Check the 5V reference at the driver side actuator Test the left temperature feedback wire for a short to ground Replace the actuator or HVAC control module only after circuit tests pass, then clear the code and retest

Code

B0415

Left temperature feedback circuit low

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

B0415. Left temperature feedback circuit low. The driver side door feedback reads low 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

Left temperature feedback wire shorted to ground
Failed position sensor inside the driver side actuator pulling feedback low
Corroded driver side actuator connector
Open 5V reference feed to the driver side 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
Check the 5V reference at the driver side actuator
Test the left temperature feedback wire for a short to ground
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 B0415 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0415
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0415 CHEVROLET Temperature Control Left Feedback Circuit Actuator Low | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes for B0415
Fetched directly. Model and year fitment remain curator claims.
B0415 CHEVROLET Temperature Control Left Feedback Circuit Actuator Low | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes for B0415
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

Report a correction for B0415. Include your vehicle, the issue and a source if you have one.