C0662Left Rear Wheel Speed Sensor B Circuit High
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Warning lamp for ABS or stability control
- Module switches channel B off, redundant functions unavailable
- Likely causes
- LikelySignal lead shorted to battery voltage or to the sensor feed
- PossibleMoisture or corrosion bridging pins in the connector
- RareSensor B drawing excessive current internally
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.