P0A6F Boost Voltage System Voltage High

P0A6F points to high boost voltage system voltage. The boosted high-voltage supply is above the value expected by the hybrid controller.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Hybrid / EV
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not ignore high boost voltage because overvoltage can trigger shutdowns and component protection.

Useful checks before replacing parts

Check boost voltage, pack voltage, boost command, regenerative current, inverter load, freeze-frame data, and related high-voltage or converter codes.
Inspect voltage sensor wiring, converter command circuits, contactor behavior, cooling operation, connector condition, and possible backfeed or control faults.
Determine whether high voltage is real or sensor-biased before replacing converter, inverter, or battery control components.

Related OBD-II codes

These nearby hybrid / ev entries can help compare wording and fault area. They may share the same verification status as the source database.