What does B0199 mean on a Chevy?

B0199. Front blower motor power circuit is out of range. The HVAC module cannot power the blower as commanded and sets a body warning. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0199 on a Chevy?

Front blower motor power circuit resistance out of range Blown or corroded front blower motor fuse Failed front blower motor drawing current outside its range Corroded or loose front blower power connector Faulty output inside the HVAC control module

How do I fix B0199 on a Chevy?

Confirm the code with a scan tool Check the front blower fuse and test for voltage at the blower connector Measure the front blower motor current draw against spec Test the front blower power circuit for excessive voltage drop Replace the front blower motor only after the circuit tests pass, then clear the code and retest

Code

B0199

Front blower motor power circuit is out of range

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

B0199. Front blower motor power circuit is out of range. The HVAC module cannot power the blower as commanded and sets a body warning. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Front blower motor power circuit resistance out of range
Blown or corroded front blower motor fuse
Failed front blower motor drawing current outside its range
Corroded or loose front blower power connector
Faulty output inside the HVAC control module

Standard procedure

Confirm the code with a scan tool
Check the front blower fuse and test for voltage at the blower connector
Measure the front blower motor current draw against spec
Test the front blower power circuit for excessive voltage drop
Replace the front blower motor only after the 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 B0199 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0199
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0199 CHEVROLET Front Blower Motor Power Circuit Range/Performance | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes
Fetched directly. Model and year fitment remain curator claims.
B0199 CHEVROLET Front Blower Motor Power Circuit Range/Performance | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

Report a correction for B0199. Include your vehicle, the issue and a source if you have one.