P20D2

Exhaust Aftertreatment Fuel Injector B Control Performance

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$50–133 (est.)

Symptoms

Check Engine light comes on
Engine performance deterioration
Increased emissions
Unsuccessful attempts to regenerate the diesel particulate filter
Noticeable increase in fuel consumption

Causes

Cleaning system nozzle clogged
Open or short circuit in control circuit
Faulty injector solenoid valve
Problems with the engine control unit
Mechanical damage to the injector

How to Fix

Check the electrical circuit of the injector for opens and shorts
Clean or replace the cleaning system nozzle
Check the functionality of the solenoid valve
Test the engine control unit
Reset errors and test drive

Related codes

P20D1 P20D3 P20D4