AdBlue in Ford Puma 2.0 EcoBlue (SID212 EVO)

March 11, 2026

AdBlue in Ford Puma 2.0 EcoBlue (SID212 EVO) – common problems and solutions

The AdBlue system in Ford EcoBlue vehicles – including the Ford Puma 2.0 TDCI 2020 with the SID212 EVO controller – plays an important role in reducing nitrogen oxide emissions. In practice, however, many drivers end up in workshops due to AdBlue errors, messages about the inability to start the engine, or warnings of reduced power.

This guide answers real user queries, such as those typed into Google:

ford adblue problem sid212
ford puma adblue fault
ford ecoblue reduced power adblue
adblue error cannot start km countdown
ford sid212 scr fault what to do

If you are experiencing these symptoms, this material will help you understand the problem and explore safe, practical solutions.

Why do AdBlue errors appear so often in Ford EcoBlue vehicles?

The AdBlue (SCR) system consists of a pump, NOx sensors, dosing modules, lines, and electronics. In EcoBlue 1.5 / 2.0 TDCI engines, common failures include:

incorrect urea solution dosing,
decreased pump efficiency,
NOx sensor error,
clogging of AdBlue lines,
messages such as: "AdBlue system fault - engine cannot be started in X km".

Users perceive this as:

stress: the car warns of an imminent start-up block,
rising costs: replacement of pumps, sensors, modules,
unpredictability: one day it works, the next – it's counting down kilometers.

We hasten to answer the question: "what to do when Ford SID212 shows an AdBlue error?"

🔧 What can be done in a Ford Puma with SID212?

1. SCR system diagnostics and repair

This is the first and always recommended path:

DTC error check,
AdBlue pump test,
NOx sensor check,
system pressure and temperature verification,
ECU software update.

In many cases, the problem lies with a single component – not the entire system.

2. Software modifications in the ECU (SCR logic off)

For informational purposes only, as in many countries, tampering with the emission system is illegal.

In practice, this involves:

deactivation of dosing maps,
disabling SCR sensor monitoring,
removal of errors and km countdown function,
stabilization of controller operating logic.

Advantages and Risks – what the user should know

Advantages (from the user's perspective):

no countdown messages to engine lock,
no problems with the pump, lines, and sensors,
stable engine operation without limp modes.

Risks and Legal Issues:

SCR deactivation increases NOx emissions,
in some countries, modifying the emission system is illegal.

Summary

The Ford Puma 2.0 EcoBlue with the SID212 EVO controller is one of the models where AdBlue problems appear relatively often.
Well-optimized diagnostics, proper repair, or – if local regulations allow – alternative technical solutions can restore the car to full functionality.