OBD-II code · Powertrain (generic)
P093A Hydraulic Accumulator Solenoid Circuit/Open
The control circuit of the hydraulic accumulator solenoid is open. Pressure storage charging cannot be commanded.
Is it safe to drive with P093A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in control wire
- PossibleOpen solenoid coil
- Less likelyPin pushed back out of connector body
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Hydraulic Accumulator Solenoid, Wiring Harness, Tcm
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.