Airbags

B0113 — Side Impact Sensor Circuit Fault – Front Right

Severity: high Drive with care, to a shop

What B0113 means

The airbag (SRS) control module continuously monitors the side impact sensors and checks their circuits for integrity. B0113 is set when the right front sensor circuit shows an open, a short, or an out-of-range resistance, or the sensor stops responding. While it is active, the system cannot reliably detect a side impact on the right.

Symptoms

  • Airbag (SRS) warning light on
  • Right side airbag may not deploy in a crash
  • SRS light flashing at key-on
  • Code returns after being cleared
  • Possible airbag system message in the instrument cluster

Possible causes

  1. Failed right front side impact sensor
  2. Damaged or altered wiring after collision or body repair
  3. Corroded or loose connector at the B-pillar or door area
  4. Open circuit or short to ground in the sensor wiring
  5. Faulty SRS control module
  6. Wrong or incorrectly installed sensor after repair

How to diagnose

  1. Scan all SRS codes and review freeze-frame data to see whether the fault is current or intermittent
  2. Ask about previous collisions, body work, seat or trim replacement
  3. Inspect the sensor connector and the connectors near the right B-pillar and sill for locks, corrosion and bent pins
  4. Check the harness for pinching, chafing and repair splices
  5. Measure circuit resistance and test for shorts to ground and power using the factory wiring diagram
  6. Verify the sensor is mounted correctly and torqued to spec
  7. Substitute a known-good sensor or reconnect and re-scan
  8. Clear the code and confirm it does not return

Common fixes

  • Repair or replace the damaged harness section
  • Clean and secure the connector, replace corroded terminals
  • Replace the right front side impact sensor
  • Replace or reprogram the SRS module if the fault is confirmed there
  • Clear codes and verify the SRS light behaves normally

Questions and answers

Can I drive with B0113?

Yes, but side impact protection on the right side is unreliable. Do not put off diagnosis for long.

Why did B0113 appear after body repair?

Usually a harness was disturbed or a sensor connector was not fully seated. Start by inspecting the connectors near the right B-pillar and under the seat.

Can I just clear the code?

You can, but if the cause remains it will come back and the airbag will still be compromised. Find the fault first.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.