I think it might be the frequency modulation sensor, located at the lower right hand side of the ignition data acquisition system.
To troubleshoot, follow the procedures as enumerated in the vehicle manual ev659, subject to the GPA 2009 40056.78 standards.
An alternate procedure can be used for older vehicles, involving rural standards and squirrel entrails.
Usually problems like this are directly attibutable to the carbon unit.
/s ;)
Or, the Dilithium Crystals may not have been mined correctly.