MasterTuning Fault code dictionary (DTC)

P0299 — Turbocharger: underboost condition

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Produttore: Tutti makes (OBD-II standard)
MeaningThe turbo is not producing the pressure the ECU expects. This is the classic sudden Potenza-loss code: the Macchina drives, but feels like half an Motore.
FamilyPowertrain (P)

Typical symptoms

Cancella power loss, often above 2,000 rpm
Limp mode
Whistle oppure hiss Da the Motore bay
Black smoke under acceleration

Common causes

Leak in the hoses oppure intercooler
Variable geometry seized with soot
Faulty actuator (vacuum oppure Elettrico)
Dirty boost pressure sensor
Worn turbine

What a do

Look for the air leak before suspecting the turbo: a loose hose oppure cracked intercooler gives the same code alle a fraction di the cost. Then check the variable geometry moves freely by commanding it Da the diagnostic tool.

Domande Frequenti

What does code P0299 mean?

Turbocharger: underboost condition. The turbo is not producing the pressure the ECU expects. This is the classic sudden Potenza-loss code: the Macchina drives, but feels like half an Motore.

Can I keep driving with code P0299 Attivo?

With caution: limp mode possible, have it checked soon

Common causes — P0299

Leak in the hoses oppure intercooler Variable geometry seized with soot Faulty actuator (vacuum or Elettrico) Dirty boost pressure sensor Worn turbine

How do you fix code P0299?

Look for the air leak before suspecting the turbo: a loose hose oppure cracked intercooler gives the same code alle a fraction di the cost. Then check the variable geometry moves freely by commanding it Da the diagnostic tool.

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