Fault Family System: Powertrain (P-Codes) 13 SAE Codes

Motor Generator Overtemp Shutdown

Diagnostic & Technical Explanation

Code P0A2F sets when the drive motor / generator inverter thermal protection reaches a temperature high enough that the control module derates or shuts down output to prevent damage. The most common physical causes are a low motor electronics coolant level or a restricted coolant flow path, a failing coolant pump, and sustained high-load operation (towing, repeated hard acceleration) that outpaces the cooling system's capacity.

These 13 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 13 times.

Codes in this family (13)

Code	Definition	Repair coverage
P0A2F	Drive Motor A Over Temperature	3 ranked fixes
P0A35	Drive Motor B Over Temperature	3 ranked fixes
P0A3B	Generator A Over Temperature	3 ranked fixes
P0A3C	Drive Motor A Inverter Over Temperature	3 ranked fixes
P0A3D	Drive Motor B Inverter Over Temperature	3 ranked fixes
P0A3E	Generator Inverter Over Temperature	3 ranked fixes
P0C11	Drive Motor A Inverter Phase U Over Temperature	3 ranked fixes
P0C12	Drive Motor A Inverter Phase V Over Temperature	3 ranked fixes
P0C13	Drive Motor A Inverter Phase W Over Temperature	3 ranked fixes
P0C14	Drive Motor B Inverter Phase U Over Temperature	3 ranked fixes
P0C15	Drive Motor B Inverter Phase V Over Temperature	3 ranked fixes
P0C16	Drive Motor B Inverter Phase W Over Temperature	3 ranked fixes
P2D59	Generator B Over Temperature	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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