P1921 on Ford

Transmission range signal out of range or implausible (Ford)

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

Ford owners report sudden downshifts and rear-wheel lockup at speed with this code, but we found no Ford statement on whether it is safe to keep driving.

Source: how we rate severity

This page covers only what differs on Ford. For what P1921 means, the ranked causes and the test order, see the P1921 guide.

What's different on Ford

Ford

  • 2015–2017 · F-150

    Supported by vehicle data

    Owners report Ford dealers finding P1921 with P0706, P0707 and P1702 on the 6R80 and replacing the range sensor or molded lead frame after sudden downshifts or limp mode.

  • 2016 · Transit

    Supported by vehicle data

    An owner quotes a Ford dealer diagnosis of P1921 transmission range signal with range sensor codes, traced to the range sensor or lead frame.

Sources and review

  1. NHTSA complaint ODI 11475327: 2016 Ford F-150 dealer diagnosis — NHTSA Office of Defects Investigation
  2. NHTSA complaint ODI 11476584: 2015 Ford F-150 dealer diagnosis — NHTSA Office of Defects Investigation
  3. NHTSA complaint ODI 11650215: 2016 Ford F-150 dealer diagnosis — NHTSA Office of Defects Investigation
  4. NHTSA complaint ODI 11458070: 2017 Ford F-150 code readout — NHTSA Office of Defects Investigation
  5. NHTSA complaint ODI 11573118: 2016 Ford Transit dealer diagnosis — NHTSA Office of Defects Investigation
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

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