B048E - Auxiliary Heater System Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B048E Possible Causes

  • Faulty Electrical Auxiliary Heater
  • Electrical Auxiliary Heater harness is open or shorted
  • Electrical Auxiliary Heater circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

Cost of diagnosing the B048E code

    Labor: 1.0

    The cost of diagnosing the B048E 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.

B048E Possible Symptoms

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

B048E Meaning

The Heating, Ventilation, and Air Conditioning (HVAC) Control Module sends a Pulse Width Modulation (PWM) signal to the electrical auxiliary heater, if the interior temperature is too low and additional heat is requested. The request signal from the HVAC control module, battery positive, ignition and ground circuits enable the electrical auxiliary heater to operate. Through the signal circuit the electrical auxiliary heater sends via a PWM signal the current status to the HVAC control module.
OBDII Code B048E - Auxiliary Heater System Malfunction - Engine-Codes.com

B048E More Information

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