Fault Family System: Powertrain (P-Codes) 4 SAE Codes

Cvt Hydraulic Accumulator Solenoid Circuit

Diagnostic & Technical Explanation

Code P093A (Hydraulic Accumulator Solenoid Circuit/Open) sets when the TCM detects an open circuit, out-of-range current, or a performance fault while driving the hydraulic accumulator solenoid that smooths line-pressure pulses in a CVT. Causes are a failed solenoid coil, debris jamming the solenoid, or damaged control wiring.

These 4 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 4 times.

Codes in this family (4)

Code	Definition	Repair coverage
P093A	Hydraulic Accumulator Solenoid Circuit/Open	4 ranked fixes
P093B	Hydraulic Accumulator Solenoid Circuit Low	4 ranked fixes
P093C	Hydraulic Accumulator Solenoid Circuit High	4 ranked fixes
P093D	Hydraulic Accumulator Solenoid Performance	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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