AZLK OBD Trouble Code 63

Blower fan switch fault

EPROM write denied faulty ECM

Oxygen O2 sensor right side - circuit open or MAP ( Manifold air pressure sensor ) - out of range ( Depending on the car model )

PCM Failure EEPROM write denied
Unsuccessful attempt to write and EEPROM location by the PCM. Controller failure, check the PCM. This code can be set when attempting an unauthorized reprogram of

manifold absolute pressure (map) sensor voltage high (low vacuum detected)