P0A95: High Voltage Fuse A
What to do
The car is down until this is resolved and the cause is found — insist the workshop identifies why it blew before fitting a replacement, or you will pay for the same failure twice. The fuse lives in the high-voltage system, often inside the battery itself: this is qualified-workshop territory with no exceptions.
What this code means
The high-voltage system's main fuse circuit is reporting a fault — on most vehicles, that the fuse has blown and the battery can no longer feed the car.
A fuse is a message, not a malfunction. It blew because current exceeded what the system is built to carry, and that current went somewhere: a short in a phase cable, insulation broken down in a motor, a failed switching stage in the inverter, crash damage, or — the case that embarrasses everyone — a tool dropped across terminals during earlier repair work. Replacing the fuse without finding the reason buys a second bang at the moment the fault repeats.
Two practical notes. The fuse frequently lives inside the battery pack, often integrated with the service plug assembly — so on many vehicles the "fuse" is a pack-opening job with everything that implies about qualification. And the presentation is total: no READY, no drive, an engine that may not even crank on full hybrids, because the pack behind the fuse is what does the cranking.
Likely causes
Start here
- Short circuit in a high voltage component · specialist
Less common
- Motor winding insulation breakdown · specialist
- Damaged high voltage phase cable or terminal · specialist
- Corroded or loose connector · easy
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
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