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B0067 Code Explained: Driver Frontal Deployment Loop Stage 2 Resistance Low (Subfault)

OBD-II scan tool displaying B0067 with the driver's steering wheel airbag highlighted and the SRS warning light illuminated, indicating a Stage 2 deployment loop low-resistance fault.

If your OBD-II scanner displays B0067, your vehicle has detected that the Driver Frontal Airbag Stage 2 deployment loop resistance is lower than the manufacturer’s specified range. Although your vehicle will usually continue to drive normally, this diagnostic trouble code (DTC) indicates an electrical fault within the Supplemental Restraint System (SRS) that could prevent the second stage of the driver’s front airbag from deploying correctly during a severe collision.

Most modern vehicles use dual-stage front airbags, which deploy with varying force depending on crash severity, seat belt usage, occupant position, and other sensor inputs. The Airbag Control Module (ACM) continuously monitors the resistance of each deployment circuit. If it detects lower-than-normal resistance in the Driver Stage 2 deployment loop, it stores B0067 and illuminates the Airbag Warning Light.

This guide explains what the B0067 code means, its symptoms, common causes, repair costs, and how technicians properly diagnose and repair the issue.

Quick Facts

ItemInformation
OBD-II CodeB0067
DescriptionDriver Frontal Deployment Loop Stage 2 Resistance Low (Subfault)
CategoryBody (B)
SystemSupplemental Restraint System (SRS)
Severity★★★★★ (Critical)
Safe to Drive?Mechanically yes, safety-wise no
Repair DifficultyModerate to Advanced
Typical Repair Cost$150–$1,800

What Does B0067 Mean?

The B0067 diagnostic trouble code indicates the Airbag Control Module has detected lower-than-normal electrical resistance within the Driver Frontal Airbag Stage 2 deployment loop.

The Stage 2 deployment circuit typically includes:

Every time the ignition is switched on, the ACM performs an electrical self-test of each airbag deployment loop.

If resistance falls below the manufacturer’s calibrated range, the ACM interprets the condition as a possible short circuit or internal electrical failure. To prevent accidental deployment or unreliable operation, it disables the affected deployment loop and stores B0067.

Symptoms of B0067

Drivers commonly notice:

Since the Stage 2 airbag activates only during a collision, the vehicle typically drives normally.

Common Causes

1. Shorted Clock Spring

A damaged clock spring is one of the most common causes of B0067.

Internal short circuits within the spiral cable can lower circuit resistance below specification.

2. Shorted Steering Column Wiring

Damaged insulation can allow wires to contact:

This reduces deployment loop resistance.

3. Faulty Driver Airbag Module

An internal short within the Stage 2 inflator can produce a low-resistance condition.

4. Moisture Inside Connectors

Water intrusion may create unintended electrical paths.

Possible sources include:

5. Pinched Wiring

Improper steering wheel installation or previous repairs may pinch or damage the SRS wiring harness.

6. Airbag Control Module Failure

Although uncommon, an internal ACM fault can falsely report a low-resistance deployment loop.

How Serious Is B0067?

Extremely serious.

If the Driver Stage 2 deployment loop is disabled:

Immediate diagnosis is recommended.

Can You Drive With B0067?

Mechanically, yes.

From a safety standpoint, no.

The vehicle will generally operate normally, but the driver’s frontal airbag may not fully deploy during a severe collision.

How to Diagnose B0067

Step 1: Scan the SRS Module

Use a professional scan tool capable of reading:

Most inexpensive OBD-II readers cannot access body (B) codes.

Step 2: Inspect the Clock Spring

Check for additional symptoms including:

These often indicate a failing clock spring.

Step 3: Inspect Steering Wheel Connectors

Inspect connectors for:

Step 4: Inspect Steering Column Wiring

Inspect the wiring harness for:

Step 5: Verify Circuit Integrity

Following the manufacturer’s SRS diagnostic procedures, inspect the deployment loop for low-resistance faults or short circuits using approved testing equipment.

Never probe an airbag inflator directly with a powered test light, apply battery voltage, or bypass SRS wiring. Always follow the manufacturer’s specified diagnostic procedures.

Common Repair Solutions

RepairEstimated Cost
Replace clock spring$250–600
Repair steering column wiring$150–400
Replace SRS connector$100–250
Replace driver airbag module$500–1,200
Replace Airbag Control Module$900–2,000

Common Diagnostic Mistakes

A common mistake is replacing the driver airbag module before inspecting the clock spring.

Many B0067 repairs are ultimately caused by:

Always inspect the complete steering column circuit before replacing expensive SRS components.

Vehicles That Commonly Experience B0067

B0067 may appear on:

Manufacturer-specific definitions and diagnostic procedures may vary.

How to Prevent B0067

While not every failure can be prevented, these practices can reduce the likelihood of B0067:

Frequently Asked Questions

What causes B0067?

The most common causes include a shorted clock spring, damaged steering column wiring, a faulty driver airbag module, moisture intrusion, previous collision repairs, or Airbag Control Module failure.

What does “Resistance Low” mean?

It means the ACM detected less electrical resistance than expected within the Driver Stage 2 deployment circuit, typically indicating a short circuit or internal electrical fault.

Is B0067 dangerous?

Yes.

The second stage of the driver’s airbag may fail to deploy correctly during a severe collision, significantly reducing occupant protection.

Can a bad clock spring cause B0067?

Yes.

A shorted clock spring is one of the most common causes of Driver Stage 2 deployment loop low-resistance faults.

Can I clear B0067 myself?

Yes, but unless the underlying electrical fault has been repaired, the code will return during the next SRS self-test.

Will B0067 affect vehicle performance?

No.

The code affects only the Supplemental Restraint System and does not impact engine performance, braking, steering assist, or transmission operation.

Final Thoughts

The B0067 code indicates that the Driver Frontal Airbag Stage 2 deployment loop resistance is lower than factory specifications, usually due to a shorted clock spring, damaged steering column wiring, moisture intrusion, or an internal airbag module fault. Although the vehicle may continue to drive normally, the Stage 2 deployment circuit may not function correctly during a severe collision, reducing the effectiveness of the Supplemental Restraint System.

Fortunately, many B0067 repairs involve replacing a faulty clock spring or repairing damaged wiring rather than replacing the airbag module itself. A complete diagnosis using manufacturer-approved SRS procedures is the safest way to restore proper airbag operation.

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