Engine-Codes - Generic - B0194

B0194 - Front Blower Motor Speed Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B0194 Possible Causes

  • Faulty Front Blower Motor
  • Front Blower Motor harness is open or shorted
  • Front Blower Motor circuit poor electrical connection
  • Faulty Blower Motor Control Module

How is the B0194 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the B0194 code

Labor: 1.0

The cost to diagnose the B0194 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B0194 Meaning

The Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the blower motor. The blower motor speed control from the HVAC control module, battery positive and ground circuits enable the blower motor control module to operate. The HVAC control module provides a Pulse Width Modulation (PWM) signal to the blower motor control module in order to command the blower motor speed. The blower motor control module transfers the PWM signal into a corresponding blower motor voltage. The voltage resides between 2-13 V and changes linear to the height of the PWM signal.

More Information

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Information for specific makes

  • B0194 BUICK Front Blower Motor Speed Circuit Range/Performance
  • B0194 CADILLAC Front Blower Motor Speed Circuit Range/Performance
  • B0194 CHEVROLET Front Blower Motor Speed Circuit Range/Performance
  • B0194 GMC Front Blower Motor Speed Circuit Range/Performance

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