Fault Family System: Powertrain (P-Codes) 6 SAE Codes

Supercharger Disconnect Clutch

Diagnostic & Technical Explanation

Code P25E9 (Supercharger Disconnect Clutch Stuck Open) sets when the ECM commands the electromagnetic clutch that couples the supercharger to the accessory drive and detects it stuck engaged, stuck disengaged, or an open/shorted/out-of-range control circuit. Causes are a worn or oil-contaminated clutch friction surface, a failed clutch coil, an excessive clutch air gap from wear, or damaged control wiring along the front of the engine.

These 6 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 6 times.

Codes in this family (6)

Code	Definition	Repair coverage
P25E9	Supercharger Disconnect Clutch Stuck Open	3 ranked fixes
P25EA	Supercharger Disconnect Clutch Stuck Closed	3 ranked fixes
P25EB	Supercharger Disconnect Clutch Circuit Range/Performance	3 ranked fixes
P25EC	Supercharger Disconnect Clutch Circuit Low	3 ranked fixes
P25ED	Supercharger Disconnect Clutch Circuit High	3 ranked fixes
P25FE	Supercharger Disconnect Clutch	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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