C1091 — Speed Wheel Sensor All Coherency Failure
Severity: Warning
Can you drive? With caution: limp mode possible, have it checked soon
Make: All makes (OBD-II standard)
| Meaning | Speed Wheel Sensor All Coherency Failure. |
| Family | Chassis (C) |
Frequently asked questions
What does code C1091 mean?
Speed Wheel Sensor All Coherency Failure. Speed Wheel Sensor All Coherency Failure.
Can I keep driving with code C1091 active?
With caution: limp mode possible, have it checked soon
How do you fix code C1091?
Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.
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Where to get it fixed