System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Transmission Fluid Condition Deteriorated
Code P088B: Transmission Fluid Filter Very Deteriorated
Diagnostic & Technical Explanation
Code P088B (Transmission Fluid Filter Very Deteriorated) sets when the TCM's fluid-life monitor (via a fluid-condition sensor or adaptive wear model) determines the transmission fluid or filter has degraded beyond its service life. This is a maintenance-driven fault: the fix is a fluid and filter service, not a sensor or wiring repair.
First-listed procedure
Rank #1
Perform transmission fluid and filter service
Moderate DIY
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: Transmission Fluid Condition Deteriorated
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)