P0A6E Boost Voltage System Voltage Low

P0A6E points to low boost voltage system voltage. The boosted high-voltage supply is below 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 continue high-load operation if the boost system cannot maintain required voltage.

Useful checks before replacing parts

Check boost voltage, pack voltage, boost command, inverter load, current flow, freeze-frame data, and related low-voltage or converter codes.
Inspect high-voltage contactor status, service disconnect seating, converter cooling, voltage sensor wiring, connector corrosion, and battery state of charge.
Determine whether low voltage is caused by battery limits, converter control, wiring resistance, load demand, or a biased voltage sensor.

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.