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Trouble code libraryIdle, speed and cruise

P0563 System voltage high

Code familySpeed, idle or charging fault

Drive gentlyYou can drive it, but take it easy and get it looked at soon – waiting usually makes the repair bigger.

Check this first

Have the battery, charging and idle control checked – these codes often come with a rough idle.

What usually fixes it

In the order a good shop checks them. Typical total: $83–$1,125 at $130 an hour.

  1. Clean the throttle body

    $83–$160

    Carbon build-up upsets idle speed.

  2. Sensor or switch

    $155–$445

    Speed, brake and clutch switches sit in this group.

  3. Battery or alternator

    $328–$1,125

    Charging faults set codes all over the vehicle.

This is the advice for this family of codes – Drive DTC doesn't have advice written for P0563 on its own yet.

Code titles are the generic SAE definitions. Prices are typical US parts and labor for a common car or light truck – a guide for judging a quote, not a quote. Always confirm a repair against the vehicle in front of you.

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See what your vehicle says about P0563

A stored code is a headline, not the story. The vehicle also holds the conditions from the moment the code set, how close each part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening. Drive DTC reads all of it with a USB adapter and a Windows PC – read-only by design.

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The Trouble codes screen in Drive DTC: stored, pending and permanent counts, then C0040-13 explained in plain English with what to check first, likely fixes in order and typical cost ranges

More in Idle, speed and cruise

All 7 codes in this group
P0500Vehicle speed sensor A P0506Idle air control system RPM lower than expected P0507Idle air control system RPM higher than expected P0520Engine oil pressure sensor/switch A circuit P0562System voltage low P0571Brake switch A circuit