OBD Guide

P0354

Ignition Coil D Primary Control Circuit/Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Misfire in cylinder D
  • Unstable engine operation
  • Power Loss
  • Check Engine Light Illuminates

Causes

  • Broken or damaged ignition coil wiring harness
  • Ignition coil malfunction
  • Problems with the ignition coil connector
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the ignition coil wiring harness
  2. Check the resistance of the ignition coil
  3. Inspect the coil connector for damage
  4. If necessary, replace the ignition coil
  5. Check the output signals of the engine control unit

Related codes

Error P0354 by Vehicle Brand