C05E7 code meaning
4WD/AWD Clutch B Actuator Control Circuit/Open
What C05E7 means
The AWD module finds no usable current path in its driver output for the clutch B actuator, most often an open coil, motor winding, connector or wire. A second clutch exists either in a twin-clutch rear drive unit with one clutch per rear wheel, or as a disconnect stage in the rear axle. Ford is the only maker with a public case: SSM 51117 lists C05E7:19 for 2021–2022 Bronco Sport 2.0L, the engine sold with the twin-clutch Badlands rear drive unit, while the single-clutch models in the same bulletin only log C0095. Ford traces it to a magnet ring that sits out of position inside the rear drive unit motor; the motor is now replaced on its own. Ford does not state which rear wheel belongs to B. Driver chips such as TI's DRV8873-Q1 test for an open load before switching on.
C05E7 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C05E7
- AWD warning lamp or message, rear axle no longer driven
- Rear locking or torque vectoring function unavailable on twin-clutch units
- Fault is present again immediately after clearing
Common causes of C05E7
- Most likelyOpen coil or motor winding in the clutch B actuator
- PossibleMisaligned magnet ring in the rear drive unit motor (Ford Bronco Sport 2.0L)
- PossibleBroken wire or corroded connector between AWD module and rear drive unit
- Less likelyFaulty driver stage in the AWD module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Awd clutch b actuatorAwd control module
What each part of C05E7 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| E7 | The exact fault in that area. |
What to do next
- Note C05E7 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 C05E7
What does C05E7 mean?
C05E7 means "4WD/AWD Clutch B Actuator Control Circuit/Open". The AWD module finds no usable current path in its driver output for the clutch B actuator, most often an open coil, motor winding, connector or wire. It is a generic code, so it means the same on every make.
Is it safe to drive with C05E7?
Drive gently and only to a workshop. With C05E7 the car can go into limp mode (reduced power) to protect itself.
Will C05E7 fail an emissions test?
C05E7 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 C05E7 to fix?
Difficulty: medium. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will C05E7 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.