OBD Guide

P23F6

Cylinder 5 Injector B Air-Fuel Ratio Imbalance

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Power Loss
  • Misfire in cylinder 5
  • Check Engine Light Illuminates

Causes

  • Cylinder 5 injector malfunction
  • Dirty or clogged injector
  • Problems with the injector electrical circuit
  • Low fuel pressure
  • Engine control unit malfunction

How to Fix

  1. Check the condition of the injector of cylinder 5
  2. Clean or replace the injector if necessary
  3. Check the integrity of the injector electrical circuit
  4. Check the fuel pressure in the system
  5. Scan the control unit for other errors

Related codes

Error P23F6 by Vehicle Brand