When I read the track voltage on my DCS handheld all my engines show the correct reading of approximately 17 volts from the track. One of my PS2 engines reads 23 volts. Everything operates correctly on the engine. I have about 20 hours of track time on the engine.
I never thought much about it but last night I started to think this may lead to a problem. I'm not sure if it reads it right from track inputs or after it goes through the boards.
I have read threads on PS3 doing this and there really wasn't an answer other than a PS3 glitch.