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Home/DTC Codes/Fiat/Uno/2010-2021 1.0L I4 Flex Fire Evo/C0046
C0046

Left Rear Wheel Speed Signal Erratic

2010-2021 Fiat Uno 1.0L I4 Flex Fire Evo

Moderate SeverityChassisGeneric (SAE)

Description

Erratic signal from left rear sensor.

Symptoms

  • ABS light on
  • Unexpected ABS activation

Common Causes

  • Tone ring crack
  • Debris
  • Bearing wear

Diagnostic Steps

  1. Scope signal
  2. Inspect tone ring
  3. Check bearing

Repair Notes

Replace sensor or tone ring.

Related Codes

C0045Left Rear Wheel Speed Sensor Circuit

Other Chassis Codes

C0046 on Other Vehicles

Fiat 124 Spider

2017-2020 1.4L I4 Turbo

Fiat 126p Maluch

1973-2000 0.65L I2 Air-Cooled

Fiat 126p Maluch

1987-2000 0.7L I2 Air-Cooled

Fiat 500

2012-2019 1.4L I4

Fiat 500 Abarth

2012-2019 1.4L I4 Turbo

Fiat 500 BR

2011-2020 1.4L I4 Flex Fire Evo

Fiat 500 PL

2007-2025 1.0L I3 Hybrid FireFly 70

Fiat 500 PL

2007-2025 1.2L I4 Fire 69

Common Questions

What does code C0046 mean on a 2010-2021 Fiat Uno?

C0046 stands for "Left Rear Wheel Speed Signal Erratic". Erratic signal from left rear sensor.

What are the symptoms of C0046 on a Fiat Uno?

Common symptoms of C0046 include: ABS light on, Unexpected ABS activation.

What causes C0046 on a 2010-2021 Fiat Uno?

Common causes of C0046 include: Tone ring crack, Debris, Bearing wear.

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