Fault Family System: Powertrain (P-Codes) 3 SAE Codes

Transmission Fluid Condition Deteriorated

Diagnostic & Technical Explanation

Code P088A (Transmission Fluid Filter 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.

These 3 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 3 times.

Codes in this family (3)

Code	Definition	Repair coverage
P088A	Transmission Fluid Filter Deteriorated	3 ranked fixes
P088B	Transmission Fluid Filter Very Deteriorated	3 ranked fixes
P0897	Transmission Fluid Deteriorated	3 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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