Welcome to Allpar. You will need to do some diagnostics to get an answer. You have to rule out any sensor or wiring issues before condemning the PCM.
If nothing was done to the instrument cluster or PCM already, the P1697 is likely inside the PCM itself. Review the tests in the link provided.
Follow the diagnostics and 'Possible Causes' here for each fault code:
http://oskin.ru/pub/chrysler-dodge/manuals/Service Manuals/2004_PL_Neon/18623-pl-powertrain_sgmldiag.pdf
If nothing was done to the instrument cluster or PCM already, the P1697 is likely inside the PCM itself. Review the tests in the link provided.
Follow the diagnostics and 'Possible Causes' here for each fault code:
http://oskin.ru/pub/chrysler-dodge/manuals/Service Manuals/2004_PL_Neon/18623-pl-powertrain_sgmldiag.pdf