Engine-Codes - Generic - B11EC

B11EC Code - Rear HVAC Blower Control Input Circuit Short

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

|B11EC code possible causes

  • Faulty Rear HVAC Blower Control
  • Rear HVAC Blower Control harness is open or shorted
  • Rear HVAC Blower Control circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module

|How is the B11EC 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.

|B11EC code tech notes

B11EC:11 Rear HVAC Blower Control Input Circuit Short to Ground
B11EC:15 Rear HVAC Blower Control Input Circuit Short to Battery or Open

|What is the cost to diagnose the B11EC code

Labor: 1.0

The cost to diagnose the B11EC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B11EC code possible symptoms?

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

|What is B11EC code meaning?

Under normal operation, the rear auxiliary control is supplied a 5-volt reference and ground from the Heating, Ventilation, and Air-Conditioning (HVAC) Module. When the auxiliary blower motor speed, airflow mode or temperature control is adjusted, the HVAC module reads the voltage from the rear auxiliary climate controls on the auxiliary blower motor speed, airflow mode, and temperature control feedback circuits to determine the requested setting. The OBDII code sets when the HVAC module senses an open, or short to ground or voltage on the rear auxiliary climate controls airflow mode input circuit.

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|B11EC code information for specific makes

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