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Home DTC Codes C0071 Medium · 30-60min
C0071 Critical

OBD2 code C0071: ABS system - Wheel speed sensor

ABS wheel speed sensor fault.

ECU: ABS

Detected Root Component

Chassis Component

Confidence level: low

Observed Symptoms

  • ABS light on
  • ESP/ESC light on
  • Brake pedal pulsation

Possible Causes

  • Faulty wheel speed sensor
  • Damaged ABS ring
  • ABS harness cut
  • Corroded connector
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 4 tool(s)

Tools Required

multimeter OBD scanner wiring diagram oscilloscope

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Diagnostic Result

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Parts likely to be the cause (Capteur ABS)

Capteur ABS

Capteur ABS

Photo d'illustration : Capteur ABS

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Frequently asked questions about code C0071

What does code C0071 mean?

OBD2 code C0071: ABS system - Wheel speed sensor. ABS wheel speed sensor fault.

What are the symptoms of code C0071?

Code C0071 may cause: ABS light on, ESP/ESC light on, Brake pedal pulsation. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code C0071?

The most common causes of code C0071 are: Faulty wheel speed sensor, Damaged ABS ring, ABS harness cut, Corroded connector. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code C0071?

Yes, code C0071 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.

How do I fix code C0071?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty wheel speed sensor, Damaged ABS ring, ABS harness cut, Corroded connector. Difficulty: Medium · Estimated time: 30-60min.