OBD Guide

U3000

Control Module

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • Check Engine light comes on
  • Unstable engine operation
  • Problems starting the engine
  • Power Loss
  • Malfunctions of other vehicle systems

Causes

  • Malfunction of the control module itself
  • Problems with module power supply (blown fuse, poor contact)
  • Wiring harness damage
  • Short circuit in the circuit
  • Module software failure

How to Fix

  1. Check fuses associated with the control module
  2. Inspect the wiring harness for damage
  3. Check the module supply voltage
  4. Try to reboot the module (disconnect the battery for 10 minutes)
  5. If necessary, replace the control module

Related codes

Error U3000 by Vehicle Brand