C056E code meaning
Brake Pedal Position Sensor Supply Voltage Circuit High
What C056E means
C056E is stored when the 5 V feed of the brake pedal position sensor rises above its limit. In Ford's 2015–2019 hybrid logic that means more than 5.13 V for 50 ms; the ABS module records C100F and the hybrid powertrain module C056E. An elevated reference usually comes from a short between the supply and a battery-voltage wire, from a missing sensor ground that lets the line float up, or from a failing regulator. Since Bosch-type pedal sensors deliver two redundant outputs referenced to the same supply, a high supply skews both and the plausibility check can no longer help. GM uses C056E in its own way, for instance in the 2017–2019 parking brake case on Acadia, Traverse, Enclave and XT5 (PIT5662A).
C056E at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C056E
- Brake system warning lamp
- Regenerative braking limited
- Pedal sensor plausibility codes may follow
Common causes of C056E
- Most likelySupply wire shorted to a battery-voltage circuit
- PossibleOpen sensor ground letting the reference float high
- Less likelyFaulty 5 V regulator in the brake module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pedal position sensorSensor supply
What each part of C056E means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 6E | The exact fault in that area. |
What to do next
- Note C056E 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 C056E
What does C056E mean?
C056E means "Brake Pedal Position Sensor Supply Voltage Circuit High". C056E is stored when the 5 V feed of the brake pedal position sensor rises above its limit. It is a generic code, so it means the same on every make.
Is it safe to drive with C056E?
Drive gently and only to a workshop. With C056E the car can go into limp mode (reduced power) to protect itself.
Will C056E fail an emissions test?
C056E 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 C056E to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will C056E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.