What does code P1683 mean?

Q: What does code P1683 mean?

Driver 5 Line 3. P1683 on GM vehicles indicates that the powertrain control module (PCM) has detected a fault on the serial data communication line it uses to talk to the electronic throttle control (ETC) module, often called 'Driver 5 Line 3' in GM service literature. The PCM monitors this dedicated data circuit for expected voltage levels and message traffic, and it sets the code when the signal is missing, out of range, or corrupted.

DTC codes / GM codes / P1683

P1683 · GMDriver 5 Line 3

P1683 on GM vehicles indicates that the powertrain control module (PCM) has detected a fault on the serial data communication line it uses to talk to the electronic throttle control (ETC) module, often called 'Driver 5 Line 3' in GM service literature. The PCM monitors this dedicated data circuit for expected voltage levels and message traffic, and it sets the code when the signal is missing, out of range, or corrupted.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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