OBD Guide

P24DD

Reductant Purge Control Valve B Circuit Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Increased reductant consumption
  • Increased NOx emissions
  • Possible SCR system error messages

Causes

  • Reductant purge valve B faulty
  • Open or short circuit in control circuit
  • Poor contact in circuit connectors
  • Engine control unit malfunction
  • Problems with power or grounding of the circuit

How to Fix

  1. Check valve control circuit integrity
  2. Check connectors and connections for corrosion or damage
  3. Check the resistance and operation of the purge valve
  4. If necessary, replace the reductant purge valve
  5. Check and, if necessary, update the software of the control unit

Related codes

Error P24DD by Vehicle Brand