C0564 code meaning
ABS Control Module System Voltage Low
What C0564 means
The ABS module needs a stable 12 V supply to switch its valves and pump. C0564 means its measured system voltage has dropped below the permitted minimum. Ford's hybrids accept 9.0 to 16.9 V and log anything outside as C0564 (low) or C0565 (high), suspending pump motor checks meanwhile. Mitsubishi's Outlander PHEV detects 10 V or less within 1 s under C1056-16 – without SAE number or MIL – and suspends ABS, EBD, ASC, traction control, brake assist and the electric parking brake. Typical triggers are a tired battery, cranking dips or a poor feed or ground to the module. Unlike C055B, which concerns only the pump motor feed, C0564 affects the whole module.
C0564 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0564
- ABS, stability and brake warnings, often together with other modules' warnings
- Electric parking brake or hill hold unavailable
- Warnings disappear after recharging the battery
Common causes of C0564
- Most likelyWeak or deeply discharged 12 V battery
- PossibleHigh resistance in the module fuse, feed wire or ground
- PossibleAlternator or DC/DC converter not supplying enough voltage
- Less likelyParasitic drain or aftermarket equipment pulling the battery down
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
ABS moduleBattery
What each part of C0564 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 64 | The exact fault in that area. |
What to do next
- Note C0564 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0564
What does C0564 mean?
C0564 means "ABS Control Module System Voltage Low". The ABS module needs a stable 12 V supply to switch its valves and pump. It is a generic code, so it means the same on every make.
Is it safe to drive with C0564?
Drive gently and only to a workshop. With C0564 the car can go into limp mode (reduced power) to protect itself.
Will C0564 fail an emissions test?
C0564 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0564 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0564 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.