Hybrid Propulsion

Drive motors, generators, power electronics and the high-voltage battery that feeds them. This system is different in kind from everything else in the corpus for one reason: it runs at several hundred volts DC, which is lethal to touch in a way nothing else on a vehicle is. The orange cabling is a warning, not a styling choice, and no part of this system is suitable for home repair or for a workshop without high-voltage training and equipment. It is also, in ordinary use, among the most reliable systems on the vehicle — the failures that do occur are usually in the cooling and control circuits around the high-voltage components rather than in the components themselves.

1500 codes · 25 components

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Components

Trouble codes

Critical 15

High 875

Moderate 367

Low 25

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.

Working on this system

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Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.

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.
What actually fixed it — or that nothing did, which is worth knowing too.