B0193 - Front Blower Motor Speed Circuit

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

B0193 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 do I fix code B0193?

Check 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.
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Tech Notes

B0193 01: Front Blower Motor Speed Circuit Short to Battery
B0193 06: Front Blower Motor Speed Circuit Low Voltage/Open

Cost of diagnosing the B0193 code

Labor: 1.0

The cost of diagnosing the B0193 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B0193 Description

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.
OBDII Code B0193 - Front Blower Motor Speed Circuit - AutoCodes.com

More Information

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