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AutoCodes - Generic - B11EC

B11EC Code - Rear HVAC Blower Control Input Circuit Short

- Code Popularity: 1,420 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B11EC?

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 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
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How to Fix the DTC B11EC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B11EC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B11EC Description

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.

OBDII Code B11EC - Rear HVAC Blower Control Input Circuit Short - AutoCodes.com
B11EC Code - Rear HVAC Blower Control Input Circuit Short

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Code B11EC comments

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