Electronic Control Unit Hardware
Table of contents
B101D GMC Possible Causes
- Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)
- Inflatable Restraint Sensing and Diagnostic Module (SDM) harness is open or shorted
- Inflatable Restraint Sensing and Diagnostic Module (SDM) circuit poor electrical connection
How do I fix code B101D 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.
Tech Notes
- B101D F0 set in the BCM after a dead battery event. The rare condition that sets B101D F0 is an extreme dead battery case. It is NOT the cause of the dead battery, but the extreme low voltage is a trigger that causes this Diagnostic Trouble Code (DTC) to set. If DTC B101D SYM F0 is set current in the Body Control Module (BCM), clear the codes. If DTC B101D SYM F0 clears with no other symptoms, DO NOT replace the BCM.
- B101D 00 Electronic Control Unit Hardware Malfunction
- B101D 04 Electronic Control Unit Hardware Open
- B101D 08 Electronic Control Unit Hardware Performance – Signal Invalid
- B101D 0F Electronic Control Unit Hardware Signal Erratic
- B101D 12 Electronic Control Unit Hardware Low Input
- B101D 13 Electronic Control Unit Hardware Low Voltage/High Temperature
- B101D 14 Electronic Control Unit Hardware High Voltage/Low Temperature
- B101D 1A Electronic Control Unit Hardware Performance – Bias Level Out of Range
- B101D 2B Electronic Control Unit Hardware Missing Reference
- B101D 2C Electronic Control Unit Hardware
- B101D 31 Electronic Control Unit Hardware Internal Checksum Error
- B101D 32 Electronic Control Unit Hardware General Memory Malfunction
- B101D 34 Electronic Control Unit Hardware RAM Malfunction
- B101D 35 Electronic Control Unit Hardware ROM Malfunction
- B101D 36 Electronic Control Unit Hardware EEPROM Performance/Malfunction
- B101D 37 Electronic Control Unit Hardware Software Malfunction
- B101D 38 Electronic Control Unit Hardware Supervision Software Malfunction
- B101D 39 Electronic Control Unit Hardware Internal Malfunction
- B101D 3A Electronic Control Unit Hardware Incorrect Component Installed
- B101D 3B Electronic Control Unit Hardware Self-Test Malfunction
- B101D 3C Electronic Control Unit Hardware Internal Communication Malfunction
- B101D 43 Electronic Control Unit Hardware EEPROM Incorrect Programming
- B101D 73 Electronic Control Unit Hardware Parity Error
- B101D F0 Electronic Control Unit Hardware
- B101D F1 Electronic Control Unit Hardware
Cost of diagnosing the B101D GMC code
The cost of diagnosing the B101D 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.
Possible Symptoms
- Air Bag Warning Light ON
B101D GMC Description
The internal fault detection is handled inside the control module. The symptom byte listed in the Diagnostic Trouble Code (DTC) Descriptor is for engineering reference only. No external circuit diagnosis is involved. If DTC B101D is set as history or current in the Inflatable Restraint Sensing and Diagnostic Module (SDM) and there are Air Bag or Pretensioner DTCs, it is important to repair the deployment loop issue first prior to replacing K36 SDM. Failure to repair the Air Bag or Pretensioner wiring concern first may cause B101D to reset in the replacement SDM. This DTC may be stored as a history DTC without affecting the operation of the control module.
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