Code result
P264F
Engine Serial Number Not Programmed or Incompatible
Moderate severity
What it means
The engine controller cannot read a valid engine serial number from its non-volatile memory, or the stored value does not match the expected pattern. Calibration sets keyed to the serial number cannot be applied.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Replacement ECU not programmed at install
highOne of the most commonly reported causes for this code — check this first.
Non-volatile memory corruption
mediumA plausible cause — test and verify before replacing parts.
Related help
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