Wrong type of wheel speed sensor fitted to the right front, for example after a previous repair; Sensor not matching the tone ring or encoder type (for example a magnetic encoder versus a toothed ring); Faulty sensor sending a signal that does not match the expected type; Wiring or connector damage, corrosion or a wrong connector altering the signal; Wrong or outdated configuration or coding in the ABS module after module replacement; Internal fault in the ABS module.

C065E

Right Front Wheel Speed Sensor B Incorrect Component Installed.

Generic
Chassis
Generic code
Medium severity

How this code is built

C: SystemChassis
0: Defined bySAE, the same on every car
6: AreaChassis area 6
5E: FaultThe specific fault in that area

What it means

C065E is a generic chassis code meaning the control unit has judged that the incorrect component is fitted as the right front wheel speed sensor 'B' circuit. The ABS or stability control module compares the signal type, characteristics or coding it receives with what it expects, and sets the code when they do not match. The exact way 'sensor B' is defined and checked varies by vehicle, so confirm the details for the specific model.

Symptoms

ABS warning light on
Traction control or stability control warning light on
Traction or stability control not working or intervening wrongly
ABS not working, or working erratically
Speedometer or cruise control problems on some models
Brake pedal feel unchanged but driver assist features unavailable

Possible causes

Wrong type of wheel speed sensor fitted to the right front, for example after a previous repairlikely
Sensor not matching the tone ring or encoder type (for example a magnetic encoder versus a toothed ring)likely
Faulty sensor sending a signal that does not match the expected typepossible
Wiring or connector damage, corrosion or a wrong connector altering the signalpossible
Wrong or outdated configuration or coding in the ABS module after module replacementpossible
Internal fault in the ABS modulerare

How to diagnose

Read all stored and pending codes and freeze frame data, and note whether other wheel speed codes are also present
Check the vehicle's service history for recent work on the right front hub, bearing, sensor or ABS module
Visually inspect the right front sensor, its part number and connector against the correct specification for the vehicle's VIN and options
Inspect the sensor wiring and connector for damage, chafing, water ingress and corrosion, and check the sensor is seated correctly
Inspect the tone ring or encoder for damage, debris, missing teeth or the wrong type, and check the air gap where applicable
Compare live wheel speed data from all four wheels during a slow road test or with the wheel spun
Check module configuration, coding and software level against the vehicle specification
Check sensor signal with an oscilloscope against the manufacturer's data where it is available

How to fix

Replace the sensor with the correct specification part for the vehicle
Fit the correct tone ring, encoder or hub bearing assembly if it does not match the sensor
Repair or replace damaged wiring or connectors
Correct the ABS module configuration or coding, or update an outdated calibration, if that is confirmed as the cause
Replace the ABS module only after all other causes have been ruled out and a fault is confirmed
Clear the code and road test to confirm it does not return

Can I keep driving?

Medium severity

The car can usually be driven carefully, but ABS and stability control may be unavailable, so allow extra braking distance, especially in the wet. Have it checked soon.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.