P1682 fault code: what 20 owners reported

Had the whole ECM replaced as well as all wire harnesses inspected. Fuse box inspection and retighned. All fuses and relays checked. Ignition switch replacement as well. The code for P1682 went away months but has now returned. Also have replaced battery and few other minor items. The car will go into limp mode randomly on freeway or roads. Almost caused an accident since the power steering stops working as well.

My 2014 GMC Acadia constantly displays “Service Stabilitrak,” “Service Traction Control,” ABS, brake, and check-engine warning lights. The vehicle will not accelerate past 40 mph under normal driving. Recently, the vehicle began showing “Engine Power Reduced” randomly without any warning, and the vehicle loses power suddenly. The OBD2 code P1682 (Ignition 1 Circuit/Relay failure) appears every time. This issue has caused the vehicle to jerk, lose acceleration, and even stall in the middle of an intersection during rush-hour traffic while my children were in the car, creating a serious safety hazard. These warnings and symptoms are constant, and the power-reduction events occur unpredictably…

MOTOR HOME / CAMPER BODY. PARKED FOR THE WINTER. PLUGGED IN BUT OCCASIONALLY RUN TO ENSURE BATTERIES ARE CHARGED. VEHICLE HAS 25,400 MILES ON IT. OUTSIDE AIR TEMPERATURE ABOUT 20 F. STARTED VEHICLE AND DASH DISPLAYS WARNINGS: ENGINE OPERATING AT REDUCED POWER AND ENGINE OVERHEATED A/C TURNED OFF. SCANNED THE ECM FOR CODES AND WAS ABLE TO CLEAR THESE TWO MALFUNCTION INDICATORS. THE TOOL ALSO REVEALED A PREMIANT CODE OF "P1682 (1/1), IGNITION 1 SWITCH CIRCUIT 2". MODULE # : $7E8 AND MODULE# $7EA. THIS CODE WILL NOT CLEAR UNTIL A REPAIR IS MADE. RESEARCH REVEALS THAT THIS IGNITION PROBLEM IS PREVALENT AMONG MANY MAKES AND MODELS OF CHEVROLET AND GM VEHICLES BETWEEN THE YEARS FROM 2014 TO 2018…

UPDATE OF NHTSA ID NUMBER: 10809089. THE STABILITRAK AND REDUCED ENGINE POWER HAS INCREASED TO THE FOLLOWING OBD CODES: P0010, P0122, P0202, P0233, P0335, P0455, P0340, P1682, P2089 AS WELL. AT THIS POINT THERE DOESN'T APPEAR TO BE ANYTHING LEFT ON THE VEHICLE THAT DOES WORK. SINCE THE RECALLS AND TECHNICAL BULLETINS ALL APPEAR TO HAVE BEEN "COMPLETED" FOR THIS VEHICLE I GUESS I CAN LOOK FORWARD TO REPEATING THE SAME PROBLEMATIC REPAIRS AGAIN AND AGAIN FOR THE REMAINDER OF THE TIME THAT I OWN THIS VEHICLE WHICH DO NOT APPEAR TO HAVE RESOLVED BUT MERELY BAND AIDED AWAY UNTIL THEY REAPPEAR. EVEN THE DRIVERS DOOR SWITCHES ALL HAD TO BE REPLACED WHICH TELLS ME THAT THIS IS RELATED TO AN…

Vehicle constantly has p1682 code and will turn off while driving. Also may just go into low power mode, turn off traction control and have stabile track service needed lights. Vehicle may shake violently as well. If code is reset the car can be driven again until the cycle reappears. Things already changed include ignition switch, ECM, o2 sensors, purge valve, mass air flow sensor.

Vehicle stalls intermittently. Due to an earlier recall of the same model but not including the one I own. There is electrical shorting inside the fuse box in the ignition circuitry that causes this problem. This is a huge problem as there is no preemptive warning. Whether you're driving 5 mph or 55 mph it happens suddenly and without any warning. The incident is stored in OBDII codes. There are no warning lamps until after 5he vehicle stalls out. #PIT5643. GM#14515. YouTube channel "Sparky's Answers" 2014 GMC Acadia, Stalls Sometimes, Codes - P0689 , P1682

While driving, check engine light went on, stabilitrack and traction control went off (information from Driver Information Center) and power was reduced. This occurred several times a week and vehicle slowed down dramatically and had to be driven slowly from the roadway. This was a dangerous situation. After safely stopping, I was able to resume travel after turning off engine and restarting, although check engine light would remain on for several on/off cycles. Engine stored code P1682. This has also happened while at a stop and when the accelerator was pressed, the vehicle would stall (sometimes in middle of intersection).

A CODE P1682 -IGNITION SWITCH CIRCUIT WILL POP UP. I'VE HAD THE PROBLEM FOR A YEAR, THE VEHICLE WILL SEEM LIKE IT DOESN'T HAVE A LOT OF POWER AT TIMES. THE ENGINE LIGHT WILL COME ON, REDUCED ENGINE POWER AND TRACTION CONTROL OFF. THE BATTERY VOLTAGE DROPS BELOW 13 . I HAVE CHANGED THE BATTERY, ALTERNATOR, THROTTLE BODY, GAS PEDAL SENSORY. IT DOES ALL OF THAT WHILE DRIVING, AND STARTS TO STALL ON ME. THAT CODE POPPED UP ONCE LAST YEAR AND I TOOK IT TO THE SHOP AND THEY SAID IT WOULDN'T COME UP AND IT'S DOING IT A LOT MORE. I HAVE DID RESEARCH AND HAVE SEEN MANY ISSUES WITH A FUSE BLOCK AND IGNITION SWITCH.

While driving, check engine light went on, stabilitrack and traction control went off (information from Driver Information Center) and power was reduced. This occurred several times over a period of two to three weeks and vehicle slowed down dramatically and had to be driven slowly from the roadway. This was a dangerous situation and luckily it never happened at highway speeds in one of the left lanes of traffic. After safely stopping, I was able to resume travel after turning off engine and restarting, although check engine light would remain on for several on/off cycles. Engine stored code P1682. Brought to dealer service and they repaired per TSB #19-NA-276 related to issues in fuse box…

While driving 65 to 70 mph on the freeway, vehicle suddenly shudders and dash state "engine reduce speed" and "service stabilitrak" and "service traction control". It has happen about twice a month 6 months back. Took it to the dealership, no code so they couldn't find the issue even though I should them multiple videos. Today the vehicle shut off while driving 65 mph this morning in the fast lane. Luckily my wife put the Emergency lights on and we wasn't hit from behind but cats did brake fast and almost hit us. So far vehicle has left me on the side on the road 3 times today. Errors codes that are coming up is P1682 and c042-00. It also states replace ignition relay switch which I had done…