1999 Chrysler 300M P1684 Fault Code: How to Fix No-Start Issue and Get the Car Running Again
Hi, I'm having trouble starting my 1999 Chrysler 300M. The car won't start and the check engine light is showing fault code P1684. What steps should I take to diagnose and fix this issue so my vehicle can start again? I've checked basic systems but am unsure where to begin with this specific code.
P1684 indicates the battery has been disconnected within the last 50 starts (status indicator only — not a direct fault code). Given that your vehicle won't start and no other codes are present, focus on basic diagnostics. Check for spark at the plugs, verify fuel pressure using a gauge, and confirm injector pulsing. These are essential steps to rule out fundamental issues before moving to more complex repairs.