C0671 code meaning
Electric Park Brake Actuator Right Circuit
What C0671 means
C0671 cannot be traced publicly: no publicly available J2012 list, no NHTSA bulletin, no GM keyword list and no Saab index contains it. GM even uses the neighbouring C0670 for a damping sensor and logs the electric park brake motor of the 2011 Saab 9-5 under C028A, with subcodes for shorts to plus or to ground, an open circuit and wrong frequency. The title points to the right rear caliper actuator. In the TRW design a motor turns a gearbox via a toothed belt, which drives a spindle and nut against the piston; swash-plate units reach about 19 kN, planetary ones about 25 kN. To release, the module reverses the motor polarity. Corrosion at the plug or a dead motor leaves that wheel unclamped or stuck, and ZF warns against freeing it with an external power source.
C0671 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0671
- Park brake warning light or message
- Right rear brake does not apply or does not release
Common causes of C0671
- Most likelyMoisture or corrosion at the actuator plug in the wheel housing
- PossibleActuator motor or gearbox defective
- PossibleChafed or broken wire between module and actuator
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Epb actuator rightEpb control moduleActuator wiring
What each part of C0671 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 71 | The exact fault in that area. |
What to do next
- Note C0671 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 C0671
What does C0671 mean?
C0671 means "Electric Park Brake Actuator Right Circuit". C0671 cannot be traced publicly: no publicly available J2012 list, no NHTSA bulletin, no GM keyword list and no Saab index contains it. It is a generic code, so it means the same on every make.
Is it safe to drive with C0671?
C0671 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will C0671 fail an emissions test?
C0671 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 C0671 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will C0671 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.