The data link connector is under the dash on the driver side.
error code cpk
Gear ratio error in first gear.
With a scan tool.
To reset the computer in a PT Cruiser, you can disconnect the battery by removing the negative terminal for about 10-15 minutes. This will clear any stored error codes and reset the computer's memory. After reconnecting the terminal, start the vehicle and let it idle for a few minutes to allow the computer to recalibrate. Alternatively, you can use an OBD-II scanner to clear diagnostic trouble codes directly.
Error codes on a 1997 Mercury Villager can be found by connecting an OBDII code reader to the diagnostic port. The service manual has a full list of error codes and their causes.
With a scan tool.
There are several reasons for the Chrysler error code 0016. Some of the possible reasons are dirty engine oil, misaligned timing gear, and bad crankshaft sensor.
12 is no spark to the coil (normal when off) and 55 is end of error codes depending on the year
You will need to connect the cars dataport to a diagnostic computer. You can usually use a normal laptop with some software from the net and a datacable connected to the cars ECU serial port. Then asses the sensor logs from the ECU, this will give you any error codes that are showing. Once you have an error code or a particular failure series from the diagnostic machine you should be able to diagnose your problem.
dosconnect your battery for about 12 hours, that will usually wipe out ANY and all error codes, trouble codes and maintenence flags
It is the end code, meaning there are no more codes to flash or show. It is not an error code.
I looked up the DTC or Diagnostic trouble codes on my computer in my repair shop and it came up with no codes I would suggest phoninh a dealership and asking them -ross sylvan auto center