Powertrain, generic (extended)

P264F Engine Serial Number Not Programmed or Incompatible

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modeNo

Some engine controllers store the serial number of the engine they belong to, much like the VIN. P264F is logged when that entry is empty or does not fit. Ford Special Service Message 47823 covers 2013 to 2019 E-Series, Super Duty, F-53/F-59 and F-650/750 models: after a PCM replacement the MIL comes on with P264F until the engine serial number, taken from the build records in OASIS, is written into the new PCM with the Ford scan tool. Ford's 2023 diesel OBD summary groups the code with P0630 under vehicle configuration, and Ford's 2014 gasoline list marks it with MIL. GM's 2024 heavy-duty ECM tables set it when any stored serial digit still reads 0xFF, checked continuously, Type A after one trip. It is a configuration fault, not mechanical damage.

Likely causes

Engine serial number not written after PCM/ECM replacement

Serial number from another engine or used control module

Stored configuration lost through a memory fault in the module

Symptoms

MIL on after control module replacement
Usually no change in how the engine runs

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€50–200

Time0.3–1 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

control modulenon volatile memory

Related codes

P0630 P0610 P0602

References: static.nhtsa.gov, fordservicecontent.com, gsi.ext.gm.com, performanceparts.ford.com.