Diesel Technology 7.3L PCM Update to OBDII - 1994-1996 Ford F-Series

7.3L Powerstroke PCM Update to OBDII Service (1994.5–1996)

If you own a 1994.5–1996 Ford 7.3L Powerstroke and want full OBDII scan tool compatibility, this PCM Update to OBDII Service from Diesel Technology of Chattanooga is the correct solution. This service reflashes your PCM to a verified stock calibration while enabling modern diagnostic access where applicable.

This is also the proper choice if you need to apply a Ford Technical Service Bulletin (TSB) update or return a previously tuned PCM back to stock.

🔥 What This Service Does:

• Reflashes your PCM to:

  • The latest Ford calibration, or

  • A proven “Gold Standard” calibration used successfully for years

• Updates eligible 1994.5–1996 PCMs to support full OBDII scan tool functionality

• Returns the PCM to stock if a previous owner installed a tune and kept the tuner

• Bench-tests the PCM before and after programming to verify proper operation

⚙️ OBDII Compatibility Details:

• If your PCM tear tag reads:

  • TDE0 / TDE1 (Automatic)

  • MLE0 / MLE1 (Manual)
    → No update is required (already OBDII capable)

• If your manual-transmission PCM code is BEGx, this service will make it fully OBDII functional

⚠️ Important Tuner Notice:

• If you still have your tuner and request a stock reflash:

  • The tuner will no longer work unless it is sent back to the manufacturer to be unlocked

🧪 Testing Included:

All PCM updates include bench testing before and after flashing to confirm proper communication and functionality.

⚠️ Important Diagnostic Note:

• On 1994.5–1997 trucks, if:

  • A scan tool will not connect, or

  • A tuner download has failed
    → The issue is often a failed PCM communication circuit

• In these cases, the PCM typically requires a rebuild, not a reflash or recovery

📋 Before Shipping Your PCM:

• Clearly explain why you want the PCM reflashed in the order comments

• If applicable, include the TSB number

• Complete the required information form (must be included inside the box)

• The more detail you provide, the more thorough the testing and guidance will be

📦 What to Send In:

• Your PCM

• Completed information FORM placed inside the package

🚗 Fitment:

• 1994.5–1996 Ford 7.3L Powerstroke

If you’re looking to modernize diagnostics, apply a factory update, or safely return your PCM to stock, this 7.3L Powerstroke PCM Update to OBDII Service delivers a proven, professional solution backed by real testing—not guesswork.