By the AutoDTCs Editorial Team·Researched against SAEJ2012 & factory service data — how we research this
OBD-II Diagnostic Trouble Code
P1649
Glow Plug Module Power Supply Circuit
P
Powertrain
engine / trans
engine / trans
1
Mfr
manufacturer code
manufacturer code
6
Computer & output circuits
49
Glow Plug Module Power Supply Circuit
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain