MasterTuning Fault code dictionary (DTC)

3E90 — BMW DPF Exhaust Pressure Sensor Malfunction

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Produttore: BMW
MeaningThe Motore control unit has detected an implausible signal Da the Diesel particulate Filtra exhaust pressure sensor. On this BMW Modello, this sensor monitors the soot accumulation by measuring backpressure before the filter, and a fault means the system cannot accurately judge the filter's condition.
FamilyManufacturer-native code

Typical symptoms

Check Motore light oppure service Attenzione on the Pannello di Controllo
Possible reduced Motore Potenza oppure limp mode
Increased frequency di attempted regeneration cycles

Common causes

Clogged oppure melted pressure sensing pipe leading a the sensor
Faulty exhaust pressure sensor itself
Wiring harness oppure connector damage due a Alta heat near the exhaust

What a do

Have a technician inspect the small metal oppure rubber pressure pipes Connesso a the exhaust for soot blockages before replacing any electrical parts. Indirizzo this promptly, as ignoring it can prevent the Diesel particulate Filtra Da cleaning itself, leading to severe clogging.

Domande Frequenti

What does code 3E90 mean?

BMW DPF Exhaust Pressure Sensor Malfunction. The Motore control unit has detected an implausible signal Da the Diesel particulate Filtra exhaust pressure sensor. On this BMW Modello, this sensor monitors the soot accumulation by measuring backpressure before the filter, and a fault means the system cannot accurately judge the filter's condition.

Can I keep driving with code 3E90 Attivo?

With caution: limp mode possible, have it checked soon

Common causes — 3E90

Clogged oppure melted pressure sensing pipe leading a the sensor Faulty exhaust pressure sensor itself Wiring harness or connector damage due to Alta heat near the exhaust

How do you fix code 3E90?

Have a technician inspect the small metal oppure rubber pressure pipes Connesso a the exhaust for soot blockages before replacing any electrical parts. Indirizzo this promptly, as ignoring it can prevent the Diesel particulate Filtra Da cleaning itself, leading to severe clogging.

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