What does B0201 mean on a Chevy?

B0201. Front blower motor power circuit voltage is high. The blower runs harder than commanded and the module sets a body warning light. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0201 on a Chevy?

Front blower power circuit shorted to a higher voltage source Failed front blower motor control with an internal short to voltage Corroded or loose front blower power connector Charging system overcharging and raising system voltage Faulty output inside the HVAC control module

How do I fix B0201 on a Chevy?

Confirm the code with a scan tool and check charging system voltage Check the front blower fuse and test for voltage at the blower connector Inspect the front blower power connector for corrosion and pin damage Test the front blower power circuit for a short to voltage Replace the front blower motor only after the circuit tests pass, then clear the code and retest

Code

B0201

Front blower motor power circuit voltage is high

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

B0201. Front blower motor power circuit voltage is high. The blower runs harder than commanded and the module sets a body warning light. 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 power circuit shorted to a higher voltage source
Failed front blower motor control with an internal short to voltage
Corroded or loose front blower power connector
Charging system overcharging and raising system voltage
Faulty output inside the HVAC control module

Standard procedure

Confirm the code with a scan tool and check charging system voltage
Check the front blower fuse and test for voltage at the blower connector
Inspect the front blower power connector for corrosion and pin damage
Test the front blower power circuit for a short to voltage
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 B0201 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0201
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0201 CHEVROLET Front Blower Motor Power Circuit High | 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.
B0201 CHEVROLET Front Blower Motor Power Circuit High | 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 B0201. Include your vehicle, the issue and a source if you have one.