OBD Guide

P2345

Cylinder 10 Above Knock/Combustion Vibration Sensor Threshold

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Detonation knocks in the engine
  • Check Engine light comes on
  • Unstable engine idling

Causes

  • Poor quality fuel (low octane number)
  • Knock sensor malfunction
  • Problems with the ignition system (plugs, coils)
  • Carbon accumulation in the combustion chamber
  • Mechanical engine problems (wear of bearings, pistons)

How to Fix

  1. Check fuel quality and replace if necessary
  2. Check the condition of the knock sensor and its connection
  3. Diagnose the ignition system (spark plugs, coils)
  4. Clean the combustion chamber from carbon deposits
  5. Carry out mechanical diagnostics of the engine

Related codes

Error P2345 by Vehicle Brand