Ford Codes List

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

Repair Order

655 Ford-enhanced codes on file

Code
P1815

Transmission 4-Wheel Drive Mode Select Short to Ground

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

Findings, check these first

  • Mode select wire shorted to ground
  • Pinched harness under the console
  • Failed switch shorting internally
  • Corroded connector
  • Module fault

Standard procedure

  1. Isolate the short with circuit testing
  2. Inspect console harness routing
  3. Test the switch for internal shorts
  4. Clean connectors
  5. Repair the short

Code lookup

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Sources and review

Review: checked against the recorded source material.

  • OBDII.pro: P1815 Ford definition

    live reference page (obdii.pro)

    Supports: Ford-family meaning for P1815: Transmission 4-Wheel Drive Mode Select Short Circuit To Ground

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

  • P1815 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes

    live reference page (obd2-codes.co)

    Supports: Ford meaning for P1815: Transmission 4-Wheel Drive Mode Select Short Circuit To Ground

    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 P1815. Include your vehicle, the issue and a source if you have one.

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