Memory and storage section of a powertrain control module retains diagnostic trouble codes (dtcs), freeze-frame data, and learned data.
What is powertrain DTCs or freeze frame data?
If you click to enlarge the picture, you'll see that it says “No Powertrain DTCs or Freeze Frame Data is presently stored in vehicle's computer.” In English it means that there are no “trouble codes” stored in the car's computer which implies that the engine is fine
Where are DTC codes stored?
With the latest OBD computer systems, DTCs get stored in a “non-volatile” memory that remains even if the battery or computer is disconnected. The fault codes are kept intact until you or mechanics clear them using a scan tool.
What is DTC freeze-frame data?
Freeze frame data is a collection of parameters and data that are recorded in memory when a Diagnostic Trouble Code (DTC) is set. Typically an ECU will support at least 1 or 2 freeze frame buffers. The collected data is typically accessed via an OBD2 interface.
Learn more about freeze frame data :
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