OBD Guide

P23FC

Cylinder 11 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
  • Dips during acceleration
  • Check Engine Light Illuminates

Causes

  • Cylinder 11 injector malfunction
  • Problems with the injector electrical circuit
  • Nozzle contamination
  • Mechanical damage to the injector
  • Problems with the fuel system

How to Fix

  1. Check the condition of the injector of cylinder 11
  2. Check the electrical circuit of the injector for opens and shorts
  3. Clean or replace the nozzle if necessary
  4. Check the pressure in the fuel system
  5. Check the operation of the computer for errors

Related codes

Error P23FC by Vehicle Brand