P1682 gmc. Most of the time, the ignition switch circuit is to blame. Cause: The ECM detects that the voltage level difference is greater than 3 V between the 2 ignition voltage circuits for less than 1 s. Apr 25, 2025 · What Is P1682 Code Ignition 1 Switch Circuit 2? P1682 Code Ignition 1 Switch Circuit 2 is a manufacturer-specific diagnostic fault code for GM vehicles and similar manufacturers that occurs when the ECM/PCM identifies an issue with the ignition switch that is experiencing a voltage issue. Mar 28, 2024 · Diagnostic fault code P1682 is indicative of an imbalance in voltage between an ignition switch’s #1 & #2 circuits. #OBDCodeP1682 #ignition1SwitchCircuit2 P1682 Ignition 1 switch circuit 2 [SOLVED] This is very informative video on obd code P1682 on GM cars and trucks found lose connection between fuse and fuse A P1682 code is a manufacturer specific diagnostic trouble code related to GM vehicles and similar makes that occurs when the ECM/PCM detects a problem with the ignition switch that is having a voltage problem. The first one goes to the ECM through the throttle Sep 4, 2024 · Learn everything about the P1682 code, including common causes, symptoms, and effective repair methods. DTC P1682 runs continuously when the above conditions are met. com How to fix a GM or Chevrolet P1682 engine Code: Driver 5 Line 2 "Ignition 1 Switch Circuit 2. This code is set when the Engine Control Module (ECM) detects a voltage difference between Circuits 1 and 2 (in GM terminology) that is more than the maximum permitted threshold. . efcd vlx euq hfh8x h8ei pq9b kykhga xixf1r rilz7 eoj8t