It is a problem in the cars computer standing for Programmable Read Only Memory
i have a code 12 on my chevy astro van what it means
Code 45 on a 1992 Chevy Astro typically indicates a rich exhaust mixture, which means there is too much fuel relative to air in the combustion process. This can be caused by issues with the fuel injection system, oxygen sensor, or engine control module. It's recommended to diagnose and address the root cause of the rich exhaust condition to prevent potential damage to the vehicle.
Ckp sencer
Trouble code P0102 means:Mass or volume circuit low input
Oxygen sensor stuck lean.
Trouble code P0172 means:System too rich (Bank 1)
Trouble code P0175 means:System too rich (Bank 2)
Lost Communication with Transfer Case Control Module
Trouble code P0700 means:Transmission control system malfunction
Trouble code P0101 means:Mass or volume circuit range performance problem
knock sensor
Trouble code P0122 means:Throttle/pedal position sensor/switch A circuit low input