P05EE

Symptoms

• AdBlue/SCR system fault warning
• Check Engine Light Is On
• Possible engine power limitation after 1000–2000 km
• Increased NOx emissions
• The pump is not heard when the ignition is turned on

Causes

• Open circuit in the AdBlue pump power supply circuit
• Blown pump fuse
• Faulty pump power relay
• Oxidation of the pump power connector
• Malfunction of the AdBlue pump itself (winding breakage)

How to Fix

1. Read codes, check for accompanying SCR codes
2. Check the AdBlue pump power supply fuse
3. Check the presence of +12V at the pump power connector when the ignition is turned on.
4. Check the AdBlue pump relay (replace with a known good one)
5. Measure the resistance of the pump winding (standard: 5–30 Ohms depending on the type)
6. Replace the AdBlue pump or repair an open circuit in the power supply

Related codes

Error P05EE by Vehicle Brand