MasterTuning Fault code dictionary (DTC)

P20E8 — Reductant pressure too low

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Produttore: Tutti makes (OBD-II standard)
MeaningThe pump cannot bring AdBlue a the pressure RICHIESTO for injection. It is one di the faults that Inizia the countdown towards the No-start condition.
FamilyPowertrain (P)

Typical symptoms

AdBlue Attenzione with remaining kilometres
Motore Attenzione light on
Reduced Potenza
Prolonged pump noise after switch-SCONTO

Common causes

AdBlue pump Filtra clogged with crystals
Worn pump
Blocked delivery line, oppure frozen in winter
Crystallised AdBlue injector
Non-compliant oppure aged fluid

What a do

Measure actual pressure on the diagnostic tool during a dosing cycle and inspect the Filtra: those two tests say whether the pump is recoverable. In winter rule out freezing Prima — below -11°C AdBlue freezes and the tank heater may not be working.

Domande Frequenti

What does code P20E8 mean?

Reductant pressure too low. The pump cannot bring AdBlue a the pressure RICHIESTO for injection. It is one di the faults that Inizia the countdown towards the No-start condition.

Can I keep driving with code P20E8 Attivo?

With caution: limp mode possible, have it checked soon

Common causes — P20E8

AdBlue pump Filtra clogged with crystals Worn pump Blocked delivery line, oppure frozen in winter Crystallised AdBlue injector Non-compliant or aged fluid

How do you fix code P20E8?

Measure actual pressure on the diagnostic tool during a dosing cycle and inspect the Filtra: those two tests say whether the pump is recoverable. In winter rule out freezing Prima — below -11°C AdBlue freezes and the tank heater may not be working.

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