OBD Guide

U3014

Control Module Input Power D Circuit/Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–28 (est.)

Symptoms

  • Unstable engine operation
  • Problems starting the engine
  • Failure of vehicle electronic systems
  • Check Engine Light Is On
  • Lost connection with diagnostic equipment

Causes

  • Broken wire in the power circuit
  • Oxidation or corrosion of contacts
  • Faulty power relay
  • Damaged fuse
  • Wiring Harness Problems

How to Fix

  1. Check the integrity of the fuses
  2. Inspect contacts and connectors for oxidation
  3. Check the integrity of the wires in the power circuit
  4. Test the power relay
  5. Check the voltage at the terminals of the control module

Related codes

Error U3014 by Vehicle Brand