P064F

Unauthorized Software/Calibration Detected

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–889 (est.)

Symptoms

Check Engine light comes on
Power limitation (emergency mode)
Refusal to start the engine (in some implementations)
Failure of the gear shift control system (automatic transmission)
Information display warning that unauthorized software has been detected

Causes

Unauthorized ECU flashing (chip tuning)
Failed or incomplete official firmware update
Installing an ECU from another car (VIN mismatch)
Damage to the ECU flash memory
Attempt to hack or bypass ECU protection

How to Fix

Read full code history and additional error details
Install official software through dealer reprogramming system
If the ECU has been replaced, make sure it is compatible and perform the binding procedure (VIN, immobilizer)
Check the integrity of the ECU flash memory
If necessary, rewrite the factory firmware from an official dealer

Related codes

P0601 P0602 P0604 P0605 P0606