P23F8

Cylinder 7 Injector B Air-Fuel Ratio Imbalance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Increase in harmful emissions
Misfire in cylinder 7
Check Engine Light Illuminates

Causes

Malfunction of injector B of cylinder 7
Problems with the injector electrical circuit
Nozzle contamination
Low pressure in the fuel system
Mechanical damage to the injector

How to Fix

Check the condition of injector B of cylinder 7
Check the electrical circuit of the injector for opens and shorts
Clean or replace the injector
Check the pressure in the fuel system
Replace the fuel filter if necessary

Related codes

P23F7 P23F9 P2300