OBD Guide

P208B

Reductant Pump A Control Performance/Stuck Off

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Exhaust gas treatment system error message
  • Increased NOx emissions

Causes

  • Reagent pump malfunction
  • Pump wiring problems
  • Faulty relay or pump control unit
  • Reagent system is dirty or clogged
  • Low level or poor quality reagent

How to Fix

  1. Check the level and quality of the reagent in the tank
  2. Diagnose the electrical circuit of the pump
  3. Check the functionality of the reagent pump
  4. Clean or replace reagent system filters
  5. If necessary, replace the reagent pump

Related codes

Error P208B by Vehicle Brand