LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (Automatic Transmission, Transfer Case And Power Transfer Unit - 6-Speed Automatic Transmission - 6R140 (2 Of 2)) >> Diagnosis And Testing >> Diagnostic Trouble Code (DTC) Charts and Pinpoint Tests - 6.8L Triton-30V - V10 >> Pinpoint Tests >> Pinpoint Test I : DTC P0731

Pinpoint Test I : DTC P0731

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
  1. Normal Operation and Fault Conditions 

    The PCM monitors clutch applications for all gears. It sets a DTC if it detects a ratio error but is unable to detect which clutch caused the issue. The transmission logic disables the gear in question. If multiple incorrect gear ratio diagnostic trouble codes (DTCs) are set, look for a common clutch involved in the operation of those gear applications. If no common clutch errors are found, look for line pressure or pump pressure issues.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P0731:00 Gear 1 Incorrect Ratio: No Sub Type Information The TCM detected a ratio error either in or while shifting to first gear. The ratio error did not last long enough for the PCM to isolate the fault to a specific clutch. The logic disabled first gear for the remainder of the key cycle in which the fault occurred.

    Possible Sources 

    • Transmission fluid contamination
    • Low line pressure
    • Forward clutch stuck off or slipping
    • Low one-way clutch slipping or damaged
    • Low/reverse clutch stuck off or slipping

  2. I1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.

    • Using a diagnostic scan tool, clear the DTC from the PCM.

    • Using a diagnostic scan tool, retrieve all continuous memory diagnostic trouble codes (CMDTCs) from the PCM.

    Is DTC P0731 present in the PCM? 

    Yes  Check the forward clutch for a does not apply condition, or for a slipping condition. REFER to: Forward Clutch Assembly . Check the low/reverse clutch for a does not apply condition, or for a slipping condition. REFER to: Low/Reverse Clutch Assembly . Check the low one-way clutch for a slipping condition. REFER to: Low One-Way Clutch Assembly .
    No  The fault is not present at this time and may be intermittent.
scientia non olet · About LEMON Manuals