Engine-Codes - Generic - B10E8

B10E8 Code - Blower Motor Control Circuit

- Code Popularity: 1,987 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC B10E8?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Blower Motor Power Module
  • Blower Motor Power Module harness is open or shorted
  • Blower Motor Power Module circuit poor electrical connection
  • Faulty A/C Heater Control

Code Tech Notes

B10E8-11-BLOWER MOTOR CONTROL - CIRCUIT SHORT TO GROUND
B10E8-12-BLOWER MOTOR CONTROL - CIRCUIT SHORT TO BATTERY
B10E8-16-BLOWER MOTOR CONTROL - CIRCUIT VOLTAGE BELOW THRESHOLD
B10E8-17-BLOWER MOTOR CONTROL - CIRCUIT VOLTAGE ABOVE THRESHOLD

⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC B10E8?

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 pins.

Search for B10E8 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B10E8 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B10E8 Code Mean?

A Blower Motor Power Module allows the microprocessor-based A/C Heater Control to calculate and provide infinitely variable blower motor speeds based upon either manual blower switch input or the ATC programming. The ATC blower motor control system uses a Pulse Width Modulated (PWM) circuit strategy. PWM voltage is applied to a comparator circuit which compares the PWM signal voltage to the blower motor feedback voltage. The resulting output drives the power module circuitry, which provides a linear output voltage to change or maintain the desired blower speed. If the A/C Heater Control detects a short to ground on the Blower Motor Control circuit. If a valid voltage is detected the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

B10E8 Code - Blower Motor Control Circuit

Need more Information on the Code?

Need more information on how to fix the B10E8 code? Get Access to Factory Service Manuals

Code B10E8 Information for Specific Makes

Need Help with the Code?

Get the B10E8 code diagnosed by a professional: Find a repair shop in your area