OBD Guide

U055A

Invalid Data Received From Special Purpose Vehicle Control Module A

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Error on the dashboard
  • Incorrect operation of special equipment
  • Disabling special equipment functions
  • Intermittent malfunctions
  • Loss of communication with the module

Causes

  • Malfunction of the special equipment control module
  • Wiring harness damage
  • Problems with the CAN bus
  • Contact corrosion
  • Module software error

How to Fix

  1. Check connections and wiring harness
  2. Diagnose CAN bus
  3. Check module power supply
  4. Update module firmware
  5. Replace the special equipment control module

Related codes

Error U055A by Vehicle Brand