P0C56 code meaning
Drive Motor B Position Sensor Circuit A Range/Performance
Powertrain system Generic code P0Cxx codes Check engine light
What P0C56 means
P0C56 flags a plausibility problem on Circuit A of the motor B resolver: the winding is connected and its level sits inside the electrical window, yet the signal it carries does not fit, for instance because it wanders or no longer matches the second winding. No manufacturer documents this code publicly. The closest published case is the motor A version P0C51, which Bentley traces to connector pin fit and contamination on its 2025 Continental hybrids. Possible reasons on motor B are the same kind of contact issue, a resolver with weakened output or interference on poorly shielded lines. P0C57 to P0C59 cover hard low, high and sporadic faults, and P0A46 judges the overall motor B angle signal.
P0C56 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C56
- Hybrid warning and check engine lamp
- Motor B torque limited or switched off
- Occasional shudder when motor B takes load
Common causes of P0C56
- Most likelyPoor pin fit or contamination at the motor B resolver connector
- PossibleDamaged shield or twisted pair letting interference onto Circuit A
- PossibleMotor B resolver winding with weakened output
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b position sensor aWiring harnessHybrid control module
What each part of P0C56 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 56 | The exact fault in that area. |
What to do next
- Note P0C56 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 P0C56
What does P0C56 mean?
P0C56 means "Drive Motor B Position Sensor Circuit A Range/Performance". P0C56 flags a plausibility problem on Circuit A of the motor B resolver: the winding is connected and its level sits inside the electrical window, yet the signal it carries does not fit, for instance because it wanders or no longer matches the second winding. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C56?
Drive gently and only to a workshop. With P0C56 the car can go into limp mode (reduced power) to protect itself.
Will P0C56 fail an emissions test?
Yes, it can. P0C56 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0C56 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 6 hours of work. This is a job for a workshop.
Will P0C56 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.