B0432 GMC - Low Voltage Level On The Control Circuit Of The RR Defog Relay
B0432 GMC Possible Causes
- Faulty Defog Relay
- Defog Relay harness is open or shorted
- Defog Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B0432 GMC?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's pins.
Cost of diagnosing the B0432 GMC code
Labor: 1.0The cost of diagnosing the B0432 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
- Engine Light ON (or Service Engine Soon Warning Light)
B0432 GMC DescriptionThe 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.
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