P0A0D
High Voltage System Interlock Circuit High
The HV interlock signal voltage is above threshold, indicating short to battery or unexpected continuity loss.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: shop_only
Common causes
Ordered by how often each turns out to be the cause.
- Short to battery on interlockCommon
- Connector pins corroded - high contact resistanceLess likely
- Supply wire pinched against B+ sourceLess likely
Parts involved
- Hv Interlock Loop
- Hv Service Connector
P0A0D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.