OBD Guide

B370B

Rear Wiper Function Control Circuit Short to Ground

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Rear wiper doesn't work
  • The janitor works erratically
  • The rear wiper turns on spontaneously

Causes

  • Wiring harness damage
  • Wiper motor malfunction
  • Short circuit in control circuit
  • Problems with the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the wiper motor
  3. Check the integrity of the control circuit
  4. Diagnose the control unit for errors

Related codes

Error B370B by Vehicle Brand