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

High Voltage Fuse

Diagnostic & Technical Explanation

Code P0A95 sets when the control module detects that the high-voltage system fuse has opened, removing power from the circuit it protects. The most common physical causes are an actual overcurrent/short-circuit event downstream of the fuse, a fuse that has fatigued and opened from age/vibration without a fault present, and a corroded fuse-holder connection.

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
P0A95	High Voltage Fuse A	3 ranked fixes
P0E2F	High Voltage Fuse B	3 ranked fixes
P0E30	High Voltage Fuse C	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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