OBD Guide

P0356

Ignition Coil F Primary Control Circuit/Open

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

Symptoms

  • Misfires
  • Reduced engine power
  • Increased fuel consumption
  • Rough idling

Causes

  • Open circuit in the coil control circuit
  • Faulty ignition coil
  • Problems with the ECU
  • Damaged wiring harness
  • Contact corrosion

How to Fix

  1. Check the resistance of the ignition coil
  2. Inspect the control circuit for breaks
  3. Check contacts and connectors
  4. Test the ECU
  5. Replace the ignition coil if necessary

Related codes

Error P0356 by Vehicle Brand