C0662 code meaning
Left Rear Wheel Speed Sensor B Circuit High
What C0662 means
C0662 is stored when the second left rear speed channel reads above anything the sensor itself can deliver. NXP's KMI25 uses three current steps: about 7 mA at rest, 14 mA for a logic one of its data protocol and 28 mA for each speed pulse. A higher value can only come from outside the sensor, such as contact with battery voltage, a chafed wire touching another feed or moisture bridging the plug. Motor magazine measured 10 to 11 V on the supply wire of Honda sensors; a signal lead that has worn through against that wire will climb towards the same voltage. No carmaker documents C0662 publicly. It also appears in GM's keyword list PIP5094, but only as a former GM code with an unrelated meaning.
C0662 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0662
- Warning lamp for ABS or stability control
- Module switches channel B off, redundant functions unavailable
Common causes of C0662
- Most likelySignal lead shorted to battery voltage or to the sensor feed
- PossibleMoisture or corrosion bridging pins in the connector
- Less likelySensor B drawing excessive current internally
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Lr wss bSensor wiring
What each part of C0662 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 62 | The exact fault in that area. |
What to do next
- Note C0662 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 C0662
What does C0662 mean?
C0662 means "Left Rear Wheel Speed Sensor B Circuit High". C0662 is stored when the second left rear speed channel reads above anything the sensor itself can deliver. It is a generic code, so it means the same on every make.
Is it safe to drive with C0662?
Drive gently and only to a workshop. With C0662 the car can go into limp mode (reduced power) to protect itself.
Will C0662 fail an emissions test?
C0662 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 C0662 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will C0662 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.