B0011 JEEP – Passenger Frontal Squib 2 Circuit

B0011 JEEP Possible Causes

  • Faulty passenger airbag
  • Passenger airbag harness is open or shorted
  • Poor electrical connection in passenger airbag circuit
  • Faulty Occupant Restraint Controller (ORC)

How to Fix JEEP B0011 Code?

Start by checking 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 pins.

Possible Symptoms

Airbag warning light illuminated

B0011 JEEP Meaning

When powered on, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify squib and wiring integrity. These circuits are maintained in a floating configuration at the ORC (neither connected to power nor ground) as protection against accidental deployment. Using the Supplemental Restraint System (SRS) load tool in the tests below replaces a suspected squib with a known good component. Using the SRS load tool adapter provides a test point as well as a method to open the shorting bar connections in the ORC harness connector.

B0011 LINCOLN – Passenger frontal deployment control stage 2

B0011 LINCOLN Possible Causes

  • Faulty passenger airbag
  • Passenger airbag harness is open or short-circuited
  • Poor electrical connection of the passenger airbag circuit

How to Fix B0011 LINCOLN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

If the Restraint Control Module (RCM) detects a short circuit between the passenger airbag stage 2 circuits and the circuits of another SRS component, it sets this Diagnostic Trouble Code (DTC) and the corresponding SRS component DTC.

Possible Symptoms

  • Airbag warning light illuminated

B0011 LINCOLN Meaning

The Restraint Control Module (RCM) monitors all deployable device and sensor circuits for a coupled signal (short) between circuits. If the RCM detects a short circuit between the circuits of one device and another device, it will store a DTC for each of the signal cross-coupling faults in memory. The RCM sends a message to the instrument panel (IPC) to illuminate the airbag warning light. When a normal loop fault is present (a loop is either shorted to battery/ground, open circuit, or low resistance), then the signal cross-coupling diagnostics will not be active. Once the normal loop fault is repaired, the signal cross-coupling diagnostic resumes.

B0011 MERCURY – Passenger Front Deployment Control Stage 2

B0011 MERCURY Possible Causes

  • Faulty passenger airbag
  • Passenger airbag harness is open or short-circuited
  • Poor electrical connection in the passenger airbag circuit

How to Fix B0011 MERCURY Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

If the Restraint Control Module (RCM) detects a short circuit between the passenger airbag stage 2 circuits and the circuits of another SRS component, it sets this Diagnostic Trouble Code (DTC) and the corresponding SRS component DTC.

Possible Symptoms

  • Airbag warning light illuminated

B0011 MERCURY Meaning

The Restraint Control Module (RCM) monitors all deployable device and sensor circuits for a coupled signal (short) between circuits. If the RCM detects a short circuit between the circuits of one device and another device, it will store a DTC for each of the signal cross-coupling faults in memory. The RCM sends a message to the instrument panel (IPC) to illuminate the airbag warning light. When a normal loop fault is present (a loop is either shorted to battery/ground, open circuit, or low resistance), then the signal cross-coupling diagnostics will not be active. Once the normal loop fault is repaired, the signal cross-coupling diagnostic resumes.

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B0011 NISSAN – Passenger Airbag Module

B0011 NISSAN Possible Causes

  • Faulty passenger airbag module
  • Passenger airbag module harness is open or shorted
  • Poor electrical connection in the passenger airbag module circuit
  • Faulty airbag diagnostic sensor unit

How to Fix B0011 NISSAN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Airbag warning light illuminated

B0011 NISSAN Meaning

The passenger airbag module is dual-stage or single-stage and is wired to the airbag diagnostic sensor unit. The airbag diagnostic sensor unit will monitor for opens and shorts in the detected lines to the passenger airbag module.

B0012 – Driver Front Deployment Loop Step 1

B0012 Possible Causes

  • Faulty steering wheel inflator module
  • Faulty steering wheel module coil
  • Steering wheel inflator module wiring harness open or shorted
  • Poor electrical connection in the steering wheel inflator module circuit
  • Faulty Sensing and Diagnostic Module (SDM)

How is B0012 Code Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Technical Notes

DTC B0012 01 Driver Frontal Deployment Loop Stage 1 Short
to Battery DTC B0012 02 Driver Frontal Deployment Loop Stage 1 Short
to Ground DTC B0012 04 Driver Frontal Deployment Loop Stage 1 Open Circuit
DTC B0012 0D Driver Frontal Deployment Loop Stage 1 Resistance Above Threshold
DTC B0012 0E Driver Frontal Deployment Loop Stage 1 Resistance Below Threshold

Possible Symptoms

  • Airbag warning light illuminated

B0012 Meaning

If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in non-volatile memory. During a frontal collision of sufficient force, the Sensing and Diagnostic Module (SDM) of the inflatable restraint system will allow current to flow through the deployment loop to deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to verify proper circuit continuity and shorts to ground or voltage. There are 2 shorting bars used in each connector that will short together the stage 1 steering wheel module high circuit and stage 1 steering wheel module low circuit and stage 2 steering wheel module high circuit and stage 2 steering wheel module low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during maintenance.

B0012 BUICK – Driver Front Deployment Loop Step 1

B0012 BUICK Possible Causes

  • Faulty steering wheel inflator module
  • Faulty steering wheel module coil
  • Steering wheel inflator module wiring harness open or shorted
  • Poor electrical connection in the steering wheel inflator module circuit
  • Faulty Sensing and Diagnostic Module (SDM)

How to Fix B0012 BUICK Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Technical Notes

DTC B0012 01 Driver Frontal Deployment Loop Stage 1 Short
to Battery DTC B0012 02 Driver Frontal Deployment Loop Stage 1 Short
to Ground DTC B0012 04 Driver Frontal Deployment Loop Stage 1 Open Circuit
DTC B0012 0D Driver Frontal Deployment Loop Stage 1 Resistance Above Threshold
DTC B0012 0E Driver Frontal Deployment Loop Stage 1 Resistance Below Threshold

Possible Symptoms

  • Airbag warning light illuminated

B0012 BUICK Meaning

If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in non-volatile memory. During a frontal collision of sufficient force, the Inflatable Restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop to deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to verify proper circuit continuity and shorts to ground or voltage. There are 2 shorting bars used in each connector that will short together the stage 1 steering wheel module high circuit and the stage 1 steering wheel module low circuit and the stage 2 steering wheel module high circuit and the stage 2 steering wheel module low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during maintenance.

Driver Front Deployment Loop Step 1

B0012 CADILLAC Possible Causes

  • Faulty steering wheel inflator module
  • Faulty steering wheel module coil
  • Steering wheel inflator module wiring harness open or shorted
  • Poor electrical connection in the steering wheel inflator module circuit
  • Faulty Sensing and Diagnostic Module (SDM)

How to Fix B0012 CADILLAC Code?

Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Technical Notes

DTC B0012 01 Driver Frontal Deployment Loop Stage 1 Short
to Battery DTC B0012 02 Driver Frontal Deployment Loop Stage 1 Short
to Ground DTC B0012 04 Driver Frontal Deployment Loop Stage 1 Open Circuit
DTC B0012 0D Driver Frontal Deployment Loop Stage 1 Resistance Above Threshold
DTC B0012 0E Driver Frontal Deployment Loop Stage 1 Resistance Below Threshold

Possible Symptoms

  • Airbag warning light on

B0012 CADILLAC Meaning

If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in non-volatile memory. During a frontal collision of sufficient force, the Sensing and Diagnostic Module (SDM) of the inflatable restraint system will allow current to flow through the deployment loop to deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to verify proper circuit continuity and shorts to ground or voltage. There are 2 shorting bars used in each connector that will short together the stage 1 steering wheel module high circuit and stage 1 steering wheel module low circuit and stage 2 steering wheel module high circuit and stage 2 steering wheel module low circuit when the connector is disconnected. This will help prevent unwanted deployment of the inflator module during maintenance.

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B0012 CHEVROLET – Driver Front Deployment Loop Stage 1

Code B0012 Chevrolet – Driver Airbag Loop Malfunction (Stage 1)

Meaning: Anomaly detected in the steering wheel airbag deployment circuit (stage 1). The Diagnostic Module (SDM) continuously monitors the circuit’s resistance and integrity.

Sub-Codes & Associated Faults

Sub-Code Specific Fault
B0012 01 Short to battery
B0012 02 Short to ground
B0012 04 Open circuit
B0012 0D Resistance too high
B0012 0E Resistance too low

Probable Causes

  1. Steering wheel airbag module failure (airbag cushion).
  2. Faulty clockspring (spiral cable).
  3. Wiring issues:
    • Damaged harness (open, short circuit).
    • Broken, bent, corroded, or improperly seated connector pins.
  4. Faulty electrical connection in the circuit.
  5. SDM failure (Diagnostic Module).

Observable Symptoms

  • ⚠️ Airbag warning light illuminated continuously.
  • “Service Airbag” warning message on the dashboard.
  • Possible deactivation of the driver’s airbag.

Diagnostic Procedure

⚠️ Critical Safety Precautions

  • Disconnect the battery and wait 15 minutes before any work.
  • Never test the circuit with a multimeter in “ohmmeter” mode (risk of accidental deployment).

Key Steps

  1. Visual Inspection:
    • Check the harness between the steering wheel and steering column (for chafing, crushing).
    • Inspect connectors under the steering wheel and at the SDM (for corrosion, deformed pins).
    • Examine the clockspring for signs of tearing or burning.
  2. Shorting Bar Verification:
    • Confirm that the 2 integrated bars in each connector properly short the circuits when disconnected (anti-deployment safety feature).
  3. Electrical Diagnosis (Specialized Tool Required):
    • Use a dedicated airbag scanner (e.g., Tech2, MDI) to:
      • Read precise sub-codes.
      • Measure the loop resistance (compare to manufacturer specifications).
      • Test continuity via the scanner’s “Load Test” functions.
  4. Component Testing:
    • Clockspring: Check resistance and absence of breaks while rotating the steering wheel.
    • SDM: Check power supplies and CAN connections after ruling out other causes.

Repair Solutions

Identified Cause Corrective Action
Faulty wiring/connector Repair harness or replace connector
Faulty clockspring Replace clockspring assembly
Faulty airbag module Replace steering wheel airbag cushion
Faulty SDM Reprogram or replace the module

Post-Repair Validation:

  • Reset the SDM with a diagnostic tool.
  • Perform a functional test via manufacturer procedures.
  • Verify the airbag warning light turns off after 2 ignition cycles.

Technical Notes

  • Shorting Bar Function: Secures the circuit during disconnection by linking the “+” and “-” wires of each stage (prevents accidental deployments).
  • SDM Role: Performs continuous self-tests on circuit resistance (typical normal value: 2.0–3.5 Ω). A variation >0.5 Ω triggers a code.
  • Common Targets: Clockspring (mechanical wear) and connectors under the driver’s seat (common fault on Chevrolet).

Reference: Specific Chevrolet procedures (consult SI/GlobalTIS).
This approach will isolate 95% of causes without risk to the system.