MasterTuning Fault code dictionary (DTC)

C1934 — HPU (Hydraulic Pump Unit) Pressurisation Failure

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningHPU (Hydraulic Pump Unit) Pressurisation Failure.
FamilyChassis (C)

Frequently asked questions

What does code C1934 mean?

HPU (Hydraulic Pump Unit) Pressurisation Failure. HPU (Hydraulic Pump Unit) Pressurisation Failure.

Can I keep driving with code C1934 active?

With caution: limp mode possible, have it checked soon

How do you fix code C1934?

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.

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Where to get it fixed

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