OBD Guide

P2D1F

Reductant System Flow - Restricted

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–111 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • SCR system error message on dashboard
  • Unpleasant exhaust smell

Causes

  • Clogged reagent injection nozzle
  • Clogged reagent system lines
  • Reagent pump malfunction
  • Low level or freezing of reagent (AdBlue)
  • Problems with SCR system sensors

How to Fix

  1. Check the level and quality of the reagent (AdBlue)
  2. Clean or replace the reagent injection nozzle
  3. Check pipelines for blockages
  4. Diagnose and, if necessary, replace the reagent pump
  5. Check the operation of the SCR system sensors

Related codes

Error P2D1F by Vehicle Brand