OBD Guide

P2D1D

Reductant System Leak Detected - Small Leak

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • SCR system error message on dashboard
  • Possible increase in reagent consumption
  • Urea smell in the AdBlue tank area
  • Reduced efficiency of the exhaust gas cleaning system

Causes

  • Damage or wear of the AdBlue system pipes
  • Loose connection in the reagent injection system
  • Crack in AdBlue tank
  • SCR pump malfunction
  • Damage to the system sealing elements

How to Fix

  1. Visual inspection of the AdBlue system for leaks
  2. Checking the tightness of connections and tubes
  3. Replacing damaged tubes or seals
  4. Checking the operation of the SCR system pump
  5. Reset error and test drive to check

Related codes

Error P2D1D by Vehicle Brand