OBD Guide

P2684

Actuator Supply Voltage C Circuit/Open

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–44 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Loss of engine power
  • Dips during acceleration

Causes

  • Open circuit in the actuator power supply circuit
  • Oxidation of contacts in connectors
  • Solenoid valve malfunction
  • Problems with the control unit
  • Short circuit in wiring harness

How to Fix

  1. Check the integrity of the power supply wires
  2. Clean connector contacts
  3. Check actuator resistance
  4. Check voltage at actuator connector
  5. If necessary, replace the faulty component

Related codes

Error P2684 by Vehicle Brand