EV and hybrid codes
High-voltage battery and hybrid system codes. Pick your code for what it means, whether you can drive, common causes and what the repair usually costs.
| Code | What it means | Drive? | Typical, Boston |
|---|---|---|---|
| P0A0D | High voltage interlock circuit open | No | $120 to $880 |
| P0A0F | Engine failed to start in hybrid system | Short trips | $60 to $290 |
| P0A78 | Drive motor inverter performance problem | No | $1,050 to $4,475 |
| P0A7F | Hybrid battery pack deterioration | Short trips | $1,450 to $5,700 |
| P0A80 | Hybrid battery weak or worn out | Short trips | $1,450 to $5,700 |
| P0A93 | Inverter cooling system problem | Short trips | $190 to $1,300 |
| P0A94 | DC/DC converter performance problem | Short trips | $1,050 to $4,475 |
| P0AA6 | High voltage isolation fault | No | $120 to $880 |
| P0AFA | Hybrid battery voltage low | Short trips | $1,450 to $5,700 |
Typical range, estimate, for the most common repair for each code. Prices updated October 2026. Not a repair shop, estimates only.