OBD Guide

B305E

Interruptible RAP Relay Circuit

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • No sound signal when seat belts are not fastened
  • The seat belt indicator does not work
  • False alarm of the reminder system

Causes

  • RAP relay circuit open
  • Faulty RAP relay
  • Wiring harness damage
  • Short circuit in the circuit
  • BCM problem

How to Fix

  1. Check the integrity of the wiring harness in the RAP relay circuit
  2. Test the RAP relay for functionality
  3. Check contacts and connections in the circuit
  4. If necessary, replace the relay or repair the harness
  5. Reset the error and check if it appears again

Related codes

Error B305E by Vehicle Brand