OBD Guide

P035C

Ignition E Control Signal Circuit High

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

Symptoms

  • Misfire in cylinder E
  • Unstable engine operation
  • Power Loss
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Open or short circuit in the ignition coil wiring harness
  • Cylinder E ignition coil malfunction
  • Problems with ignition coil connectors
  • ECU malfunction
  • Corrosion of contacts in the control circuit

How to Fix

  1. Check the integrity of the ignition coil wiring harness
  2. Inspect the coil connectors for damage and corrosion.
  3. Check the resistance of the ignition coil
  4. If necessary, replace the ignition coil
  5. Check the control signal from the ECU using an oscilloscope
  6. If problems are detected with the ECU, replace or reprogram the unit

Related codes

Error P035C by Vehicle Brand