P0817 Starter disable P/N circuit /open
February 17, 2022
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P0817 code - The transmission control module performs various internal tests to verify proper controller operation. If the TCM detects that the variables that dictate the vehicle application are not present the DTC will set. When monitored continuously with the ignition on. Set condition if the TCM detects that the variables that dictate the vehicle are not present.
Posssible cause:
- Control not coded
- transmission control module (TCM)
Check TCM is correct
Flash and reprogram the TCM with the correct software n accordance with the service information. Perform NAG1 Transmission Verification Test.
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