Cause
Shorted actuator dragging the supply down
An actuator whose winding has shorted, pulling far more current than its circuit was designed to deliver — and taking its neighbours down with it. The distinctive property is that the fault does not stay where it started: a shared fuse blows, or a supply rail sags, and every device on that rail misbehaves at once.
Which is why a page of unrelated codes can have one cause. Replacing the parts that are merely reporting the symptom fixes nothing, and a fuse replaced without finding the short blows again — sometimes immediately.
The method is disconnection rather than measurement. Unplug devices on the affected circuit one at a time until the supply recovers; the one that restores it is the fault. A shorted winding often measures near enough to normal cold and fails when hot, so a resistance check alone can miss it.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
2 of the 3 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (3)
Codes where this is a likely explanation first, rather than merely a possible one.
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.
Others who found this
Be the first to write this up
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.
Sign in or create an account to add what you found about Shorted actuator dragging the supply down.