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Home/DTC Codes/BMW/3 Series G20/2019-2024 2.0L I4 Turbo B48/C0040
C0040

Right Front Wheel Speed Sensor Circuit

2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48

Moderate SeverityChassisGeneric (SAE)

Description

Malfunction in the right front ABS wheel speed sensor.

Symptoms

  • ABS light on
  • Traction control light on
  • ABS inactive

Common Causes

  • Faulty sensor
  • Tone ring damage
  • Wiring issue
  • Wheel bearing failure

Diagnostic Steps

  1. Test sensor
  2. Inspect tone ring
  3. Check wiring
  4. Check bearing

Repair Notes

Replace sensor. Check bearing and tone ring.

Related Codes

C0035Left Front Wheel Speed Sensor CircuitC0041Right Front Wheel Speed Signal Erratic

Other Chassis Codes

C0040 on Other Vehicles

BMW 3 Series F30

2012-2018 2.0L I4 Turbo N20

BMW 3 Series F30

2012-2018 3.0L I6 Turbo N55

BMW 318i E36

1992-1998 1.8L I4

BMW 318i E36

1996-1999 1.9L I4 M44

BMW 318is E36

1992-1996 1.8L I4

BMW 318ti E36

1995-1999 1.9L I4

BMW 318ti E36

1996-1999 1.9L I4 M44

BMW 320i

2012-2015 2.0L I4 Turbo N20

Common Questions

What does code C0040 mean on a 2019-2024 BMW 3 Series G20?

C0040 stands for "Right Front Wheel Speed Sensor Circuit". Malfunction in the right front ABS wheel speed sensor.

What are the symptoms of C0040 on a BMW 3 Series G20?

Common symptoms of C0040 include: ABS light on, Traction control light on, ABS inactive.

What causes C0040 on a 2019-2024 BMW 3 Series G20?

Common causes of C0040 include: Faulty sensor, Tone ring damage, Wiring issue, Wheel bearing failure.

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