B0432 - Low Voltage Level On The Control Circuit Of The RR Defog Relay

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Defog Relay
  • Defog Relay harness is open or shorted
  • Defog Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

Possible symptoms

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

B0432 Description

The Body Control Module (BCM) monitors the voltage level on the control circuit of the RR DEFOG relay. The voltage level should be near system voltage while the RR DEFOG relay is de-energized. The voltage will be pulled low when the BCM energizes the RR DEFOG relay. The BCM test the control circuit of the RR DEFOG relay while the relay is de-energized.
OBDII Code B0432 - Low Voltage Level On The Control Circuit Of The RR Defog Relay - AutoCodes.com

B0432 Information for specific makes

  • B0432 BUICK Low Voltage Level On The Control Circuit Of The RR Defog Relay
  • B0432 CADILLAC Low Voltage Level On The Control Circuit Of The RR Defog Relay
  • B0432 CHEVROLET Low Voltage Level On The Control Circuit Of The RR Defog Relay
  • B0432 GMC Low Voltage Level On The Control Circuit Of The RR Defog Relay

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