OBD Guide

P23FD

Cylinder 12 Injector B Air-Fuel Ratio Imbalance

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Uneven engine operation
  • Increased fuel consumption
  • Reduced engine power
  • Increased emissions of harmful substances
  • Check Engine light comes on

Causes

  • Malfunction of injector B cylinder 12
  • Problems with the injector electrical circuit
  • Dirty or clogged injector
  • Engine control unit malfunction
  • Problems with the fuel system

How to Fix

  1. Check the condition of injector B of cylinder 12
  2. Check the injector electrical circuit for breaks or short circuits
  3. Clean or replace the injector if necessary
  4. Check the operation of the fuel system
  5. If necessary, replace the engine control unit

Related codes

Error P23FD by Vehicle Brand