B0031 critical

SRS Frontal Impact Sensor Circuit -- Right

The B0031 code means the vehicle's onboard diagnostic system has detected: SRS Frontal Impact Sensor Circuit -- Right. This is a critical severity code.

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Keep driving?
No -- stop driving
DIY difficulty
hard
Estimated cost
$150 - $500 (parts and labor)
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Common Symptoms

  • SRS warning light illuminated
  • Right front impact sensor fault
  • Airbag system malfunction indicator
  • Warning chime active
  • Vehicle safety inspection failure

Probable Causes (Ranked by Likelihood)

  • Defective right front impact sensor Very High
  • Damaged wiring to right impact sensor High
  • Corrosion on impact sensor connector Moderate
  • Impact sensor displaced from mounting position Moderate
  • SRS module communication fault Low

Step-by-Step Diagnostic Procedure

  1. Read all SRS-related DTCs

  2. Inspect right front impact sensor and mounting

  3. Check wiring harness from sensor to SRS module

  4. Measure impact sensor circuit values

  5. Verify sensor is properly mounted and aligned

Frequently Asked Questions

Is this the same sensor as the parking sensor?

No. The SRS impact sensor is a safety device that detects crash forces for airbag deployment. Parking sensors are separate ultrasonic devices for distance detection.

Can road debris trigger this code?

Road debris striking the front bumper area can potentially damage the impact sensor or its wiring, though the sensor is designed to withstand normal road conditions.

Do both front impact sensors need to work?

Yes. The SRS system uses inputs from both left and right impact sensors to accurately determine the direction and severity of a frontal collision.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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