P20A0

Reductant Purge Control Valve A Circuit /Open

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 consumption of AdBlue reagent
Increased NOx emissions
Possible transition to emergency mode

Causes

Valve control circuit open
Short circuit in wiring
Reagent purge valve malfunction
Problems with the control unit
Oxidation of contacts in connectors

How to Fix

Check valve control circuit integrity
Measure valve winding resistance
Inspect connectors and contacts for corrosion
Check the operation of the reagent supply valve
If necessary, replace the reagent purge valve

Related codes

P20A1 P20A2 P20A3