OBD-II · Engine and powertrain (P)
P1639
Manufacturer-specific code
Meaning by manufacturer
This code means different things on different makes. Find yours below.
Ford
Vehicle ID block corrupted or not programmed
The engine computer is missing the vehicle-specific configuration it needs, usually after it was replaced or a reprogramming failed.
Likely causes, most likely first
- 01Engine computer replaced without programming
- 02Interrupted or failed software update
- 03Internal memory fault in the engine computer
Severity: Caution: get it checked soon · Workshop job