Fault Family System: Powertrain (P-Codes) 14 SAE Codes

BCM Requested MIL

Diagnostic & Technical Explanation

Code P00FF (Body Control Module Requested MIL Illumination) is a network-relayed fault where the body control module has asked the ECM to illuminate the malfunction indicator lamp for a body-side condition. The actual root cause lives in a body control module DTC (lighting, security, or network fault) rather than the powertrain, so retrieving BCM-side codes is required to pinpoint the trigger.

These 14 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 14 times.

Codes in this family (14)

Code	Definition	Repair coverage
P00FF	Body Control Module Requested MIL Illumination	3 ranked fixes
P069E	Fuel Pump Control Module Requested MIL Illumination	3 ranked fixes
P06EC	Fuel Injector Control Module Requested MIL Illumination	3 ranked fixes
P0A7B	Battery Energy Control Module Requested MIL Illumination	3 ranked fixes
P0AC4	Hybrid/EV Powertrain Control Module Requested MIL Illumination	3 ranked fixes
P0CA1	Drive Motor Control Module Requested MIL Illumination	3 ranked fixes
P20C9	Reductant Control Module Requested MIL Illumination	3 ranked fixes
P2561	A/C Control Module Requested MIL Illumination	3 ranked fixes
P2584	Fuel Additive Control Module Requested MIL Illumination	3 ranked fixes
P25A2	Brake System Control Module A Requested MIL Illumination	3 ranked fixes
P25AF	Coolant Temperature Control Module Requested MIL Illumination	3 ranked fixes
P25C9	Brake System Control Module B Requested MIL Illumination	3 ranked fixes
P26C8	Chassis Control Module 1 Requested MIL Illumination	3 ranked fixes
P26C9	Chassis Control Module 2 Requested MIL Illumination	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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