Ford Codes List

Ford-enhanced trouble code lookup
for Ford, Lincoln and Mercury.

Repair Order

655 Ford-enhanced codes on file

Code
P1858

Transfer Case Contact Plate D Circuit Failure

Category
Powertrain - Transmission
Severity
Check Engine Light
Applies to
F-150, Super Duty, Explorer

Findings, check these first

  • Worn plate D tracks
  • Open plate D circuit
  • Oil-fouled plate
  • Corroded connector
  • Module input fault

Standard procedure

  1. Clean and inspect the plate
  2. Test plate D continuity
  3. Check for oil intrusion
  4. Verify module input
  5. Replace the plate per findings

Code lookup

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Sources and review

Review: checked against the recorded source material.

  • OBDII.pro: P1858 Ford definition

    live reference page (obdii.pro)

    Supports: Ford-family meaning for P1858: Transmission Transfer Case Contact Plate 'D' Circuit Failure

    Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

  • P1858 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes

    live reference page (obd2-codes.co)

    Supports: Ford meaning for P1858: Transmission Transfer Case Contact Plate ‘D’ Circuit Failure

    Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.

Last updated 2026-09-06.

Report a correction for P1858. Include your vehicle, the issue and a source if you have one.

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