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P1639

Vehicle ID Block Corrupted or Not Programmed

2000-2003 Ford Excursion 7.3L V8 Power Stroke Diesel

High SeverityPowertrain

Description

The Vehicle Identification (VID) block in the PCM is corrupted or has not been programmed. The VID block contains critical vehicle configuration data.

Symptoms

  • Check Engine Light
  • Vehicle may not start
  • Various systems may not function correctly
  • Emissions monitors may not run

Common Causes

  • New PCM installed without VID programming
  • PCM memory corruption
  • Failed PCM programming procedure
  • Battery disconnected during programming

Diagnostic Steps

  1. Attempt to reprogram VID block with Ford diagnostic tool
  2. Verify VIN matches between vehicle and PCM
  3. Check for PCM software updates

Repair Notes

Reprogram VID block using Ford IDS/FDRS diagnostic tool. Dealer-level equipment typically required.

Other Powertrain Codes

P1639 on Other Vehicles

Common Questions

What does code P1639 mean on a 2000-2003 Ford Excursion?

P1639 stands for "Vehicle ID Block Corrupted or Not Programmed". The Vehicle Identification (VID) block in the PCM is corrupted or has not been programmed. The VID block contains critical vehicle configuration data.

What are the symptoms of P1639 on a Ford Excursion?

Common symptoms of P1639 include: Check Engine Light, Vehicle may not start, Various systems may not function correctly, Emissions monitors may not run.

What causes P1639 on a 2000-2003 Ford Excursion?

Common causes of P1639 include: New PCM installed without VID programming, PCM memory corruption, Failed PCM programming procedure, Battery disconnected during programming.

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