C0667 code meaning
Right Rear Wheel Speed Sensor B Range/Performance
What C0667 means
C0667 reports that the second right rear speed signal arrives but is not plausible, while the circuit itself is fine. No maker documents the code. At the rear axle the air gap can change while driving. A Ford patent observes that on semi-floating axles the shaft can deflect by more than 0.5 mm, enough to push a Hall sensor out of range of its tone ring so the signal turns wrong or vanishes, especially on the more heavily loaded side in a turn. On non-driven rear axles with two tapered roller bearings, Schaeffler requires the bearing clearance to be set by the maker's specification; too much play spreads the load unevenly and makes the hub less rigid, which can likewise disturb the gap. Faults that come with load or cornering point in this direction.
C0667 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of C0667
- Warning mainly with load, towing or in fast bends
- Stability control functions temporarily withdrawn
Common causes of C0667
- Most likelyWorn or wrongly adjusted wheel bearing letting the gap vary
- PossibleAxle shaft deflection under load or a bent shaft
- PossibleSensor not fully seated in its bore
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rr wss bTone ring
What each part of C0667 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 67 | The exact fault in that area. |
What to do next
- Note C0667 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 C0667
What does C0667 mean?
C0667 means "Right Rear Wheel Speed Sensor B Range/Performance". C0667 reports that the second right rear speed signal arrives but is not plausible, while the circuit itself is fine. It is a generic code, so it means the same on every make.
Is it safe to drive with C0667?
Drive gently and only to a workshop. With C0667 the car can go into limp mode (reduced power) to protect itself.
Will C0667 fail an emissions test?
C0667 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 C0667 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will C0667 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.