Driver Airbag Circuit High Resistance
The B2117 code indicates that the Restraint Control Module (RCM) has detected abnormally high resistance in the driver's airbag deployment circuit (stage 1 or 2) or the driver's seatbelt pretensioner circuit. This suggests an open circuit, a high-resistance connection, or an internal fault in the inflator or pretensioner.
1. Commonly Affected Makes
2. Most Common Causes
- Loose, corroded, or damaged connector at the steering wheel airbag (clockspring)
- Defective clockspring with broken internal wiring
- Driver airbag module (inflator) with internal resistance out of specification
- Faulty driver seatbelt pretensioner
- Open or cut wiring between the RCM and driver-side components
- Internal RCM failure (rare)
3. Symptoms You Will Notice
- Airbag warning light illuminated
- Supplemental Restraint System (SRS) fault message on dashboard
4. Step-by-Step Diagnosis
Scan the RCM for B2117 and any related codes
Visually inspect the clockspring and airbag connectors for damage or corrosion
Measure resistance at the driver airbag and pretensioner circuits using a multimeter
Test the clockspring continuity by rotating the steering wheel
If all else fails, perform a pinpoint test of the RCM output circuits
5. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe. The airbag may not deploy in a crash, increasing injury risk. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Repair costs typically range from $200 to $800, depending on whether the clockspring, airbag module, or pretensioner needs replacement.