MasterTuning Fault code dictionary (DTC)

DF991 — Control circuit particle filter injector

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: Renault
MeaningControl circuit particle filter injector.
FamilyManufacturer-native code

Frequently asked questions

What does code DF991 mean?

Control circuit particle filter injector. Control circuit particle filter injector.

Can I keep driving with code DF991 active?

With caution: limp mode possible, have it checked soon

How do you fix code DF991?

Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.

Need help with this fault?

We are ECU specialists: diagnosis, file repair and remapping for cars, bikes, trucks and agricultural vehicles.

Contact us
Where to get it fixed

Related codes