What does code P1684 mean?

Q: What does code P1684 mean?

Battery Disconnected Within Last 50 Starts. P1684 is a Chrysler-specific informational code that the powertrain control module (PCM) sets when it detects that the battery has been disconnected or its power feed was interrupted within the last 50 ignition cycles. The PCM logs this event because it loses its learned adaptive memory and idle strategy whenever battery voltage is removed, and it counts each subsequent start until the 50-start window clears the code.

DTC codes / Chrysler codes / P1684

P1684 · ChryslerBattery Disconnected Within Last 50 Starts

P1684 is a Chrysler-specific informational code that the powertrain control module (PCM) sets when it detects that the battery has been disconnected or its power feed was interrupted within the last 50 ignition cycles. The PCM logs this event because it loses its learned adaptive memory and idle strategy whenever battery voltage is removed, and it counts each subsequent start until the 50-start window clears the code.

SystemPowertrain

Code typeChrysler specific

SeverityLow

Fix difficultyDIY

AreaComputer and output circuits

Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.