OBD Guide

P23F6

Cylinder 5 Injector B Air-Fuel Ratio Imbalance

P23F6 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Injector B Air-Fuel Ratio Imbalance. Common causes: cylinder 5 injector malfunction, dirty or clogged injector. Estimated repair cost: $17–89.

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

FAQ

What does the P23F6 code mean?

P23F6 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Injector B Air-Fuel Ratio Imbalance

What causes a P23F6 error code?

The most common causes of P23F6 include: Cylinder 5 injector malfunction; Dirty or clogged injector; Problems with the injector electrical circuit; Low fuel pressure.

How do I fix a P23F6 diagnostic trouble code?

To fix P23F6: Check the condition of the injector of cylinder 5. Clean or replace the injector if necessary. Check the integrity of the injector electrical circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P23F6?

Yes, but get it checked soon

How much does it cost to fix P23F6?

The estimated repair cost for P23F6 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat