System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Planetary Gearset Failure
Code P088E: Planetary Gear Set Failure
Diagnostic & Technical Explanation
Code P088E (Planetary Gear Set Failure) sets when the TCM's shaft-speed cross-checks indicate a planetary gear set is not transmitting torque as commanded, consistent with broken gear teeth, a shattered planet carrier, or failed thrust bearings. This is a major internal mechanical failure requiring transmission teardown, not a sensor or electrical fix.
First-listed procedure
Rank #1
Confirm the fault is mechanical, not sensor-related
Professional Required
This is the first procedure in the authored
consideration order, not a measured cause likelihood. Execute it only when its prerequisites
and diagnostic findings support it. Its cost and labor estimates (where known), the step-by-step procedure and the
remaining 2 procedure(s) are in the licensed dataset. Ordering context.
Full family: Planetary Gearset Failure
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)