Get Support
07503 134362
SID212EVO P20EE SCR Efficiency Fault: Why It Keeps Coming Back
SID212EVO P20EE SCR Efficiency Fault: Why It Keeps Coming Back Quick answer: P20EE means the ECU thinks the SCR system is not reducing NOx enough. On SID212EVO, it often returns because the root cause sits upstream of the part you replaced. Common triggers include NOx sensor drift, AdBlue dosing issues,…
By: 
Ford 2.0 EcoBlue P20EE: SCR efficiency fault tests that work (2026)
Ford 2.0 EcoBlue P20EE: SCR efficiency fault tests that work (2026) Quick answer: P20EE on Ford 2.0 EcoBlue means the ECU thinks the SCR system is not reducing NOx enough. The fast, reliable path is: check for AdBlue quality / dosing issues first, then run live NOx sensor checks, confirm…