P2712
Hydraulic Power Unit Leakage
The transmission hydraulic power unit (pump + accumulator) has detected a pressure drop that suggests internal leakage. Pressure cannot be held during shifts.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Worn or hardened seals in the valve bodyCommon
- Worn hydraulic pump cannot maintain pressurePossible
Parts involved
- Hydraulic Pump
- Accumulator
- Valve Body Seals
P2712 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.