Airbags

B0035 — Second Row Right Side Airbag Deployment Control Circuit Fault

Severity: high Drive with care, to a shop

What B0035 means

The SRS control module continuously tests the airbag and sensor circuits for normal resistance. B0035 means it found a short to ground or another out-of-range condition in the second row right side airbag control circuit or its related sensor. The module stores the code, turns on the SRS light, and may disable part of the system. The exact circuit description varies by manufacturer.

Symptoms

  • SRS or Airbag warning light on
  • One or more airbags disabled by the system
  • Light stays on after startup
  • Passenger airbag status light may flash or stay on
  • Usually no other symptoms beyond the light and the code

Possible causes

  1. Short to ground or damaged wiring in the airbag or auxiliary sensor circuit
  2. Corroded or loose SRS connectors
  3. Wiring damaged under the rear seat or in the seat rail
  4. Faulty impact sensor (auxiliary discriminating sensor) or rear seat side airbag module
  5. Prior collision damage or upholstery and body repair
  6. Faulty SRS control module (uncommon)

How to diagnose

  1. Scan all codes with an SRS-capable tool, note the freeze frame, and look for other airbag circuit codes
  2. Inspect the right rear seat, trim, carpet and harness for damage, moisture or past repairs
  3. Disconnect the battery and wait the time specified by the manufacturer before touching SRS connectors
  4. Check connectors under the seat and at the SRS module for corrosion, bent pins and loose locks
  5. Test the circuit for a short to ground and check resistance per the factory wiring diagram; never probe airbag squibs with a regular meter
  6. Check the sensor and side airbag module data with the scan tool against specifications
  7. Clear the code and see if it returns after wiggling the harness and moving the seat

Common fixes

  • Repair or replace the damaged harness and connectors
  • Replace the faulty auxiliary sensor
  • Replace the side airbag module if it is faulty, ideally by a professional
  • Replace or reprogram the SRS module if confirmed faulty

Questions and answers

What does B0035 mean?

The SRS module detected a fault in the right rear side airbag circuit, most often a short to ground. The airbag may be disabled as a result.

Can I drive with the SRS light on?

You can drive, but the airbags may not deploy in a crash. Do not put off diagnosis.

Can I check the airbag circuit myself?

Visual checks of the seat and connectors are fine after disconnecting the battery. Testing squib circuits or replacing airbags is best left to a professional because of accidental deployment risk.

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.