What does code P1694 mean?

Q: What does code P1694 mean?

No CCD Messages Received From ECM. P1694 means the powertrain control module (PCM) has not received any valid messages from the engine control module (ECM) over the Chrysler Collision Detection (CCD) bus for a set period. The PCM monitors the CCD data bus and sets this code when the expected periodic messages from the ECM are missing, indicating a communication failure between the two modules.

DTC codes / Chrysler codes / P1694

P1694 · ChryslerNo CCD Messages Received From ECM

P1694 means the powertrain control module (PCM) has not received any valid messages from the engine control module (ECM) over the Chrysler Collision Detection (CCD) bus for a set period. The PCM monitors the CCD data bus and sets this code when the expected periodic messages from the ECM are missing, indicating a communication failure between the two modules.

SystemPowertrain

Code typeChrysler specific

SeverityHigh

Fix difficultyProfessional

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.