C0031 on Ford

Left front wheel speed sensor circuit fault (Ford and Lincoln)

Severity not verified — if the car runs badly, have it inspected

The sources describe the fault and the warning lamps but not how safe it is to drive; ABS and stability control are safety-critical, so have it checked.

It gets more serious if:

  • Stop: The red brake warning lamp comes on, the pedal feels soft or low, or steering assist is lost along with the ABS lamp.

Safety-critical system: explanation only, no DIY steps. Source: how we rate severity

This page covers only what differs on Ford. For what C0031 means, the ranked causes and the test order, see the C0031 guide.

What's different on Ford

Ford

  • 2020 · Escape

    Supported by vehicle data

    Ford TSB 20-2323 ties C0031 to the sensor harness rubbing on the front wheels on early-build 2020 vehicles. Bulletin currency not verified.

  • 2020–2021 · Explorer

    Supported by vehicle data

    Ford SSM 49433 lists C0031 with the other wheel speed codes and points to metal contamination. Bulletin currency not verified.

  • 2015–2019 · Transit

    Supported by vehicle data

    Ford SSM 47785 pairs C0031 and C0034 with front wheel bearing noise. Bulletin currency not verified.

  • 2021 · F-150

    Supported by vehicle data

    Ford TSB 21-2295 covers a rubbing noise with C0031 and C0034 on early-build 2021 trucks. Bulletin currency not verified.

  • TSB 20-2323 (ford)Status unverified

    ABS and stability lamp with C0031, C0034 and/or C0051

    2020escape · NHTSA 10180536

    Inspect the wheel speed sensor harness and install the pigtail service kit.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • SSM 49433 (ford)Status unverified

    ABS lamp with C0031, C0034, C0037 and/or C003A

    2020–2021explorer · NHTSA 10186400

    Check sensors and rings for metal contamination before replacing them.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • SSM 47785Status unverified

    Front wheel bearing noise or C0031 and/or C0034

    2015–2019transit · NHTSA 10155560

    Remove and clean the front wheel speed sensor and see whether noise and codes clear.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • TSB 21-2295Status unverified

    Rubbing noise and/or C0031 and/or C0034

    2021f-150 · NHTSA 10202699

    Inspect the front brake flexible hose routing.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Sources and review

  1. Ford TSB 20-2323: ABS and stability lamp with C0031, C0034 and/or C0051 on Escape and Corsair — Ford via NHTSA
  2. Ford SSM 49433: ABS lamp with C0031, C0034, C0037 and/or C003A on Explorer and Aviator — Ford via NHTSA
  3. Ford SSM 47785: front wheel bearing noise or C0031 and/or C0034 on Transit — Ford via NHTSA
  4. Ford TSB 21-2295: rubbing noise and/or C0031 and/or C0034 on F-150 — Ford via NHTSA
  5. NHTSA complaints ODI 11745133 (Lincoln MKZ) and 11073267 (Ford Fusion) — NHTSA ODI
Last reviewed
Written by
Saurabh K.
Editorial review
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Technician review
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