Aug 30, 2016 · Once completed, (following the special instructions) it "mimics" a properly operating sensor at the correct coolant level, PERMANENTLY mitigating the possibility of ever getting the …

Nov 6, 2021 · I brought my 2012 Volt (143k miles) in today, sporting the Service High Voltage Charging System message/code. I had already topped off the battery coolant in the reservoir and replaced the …

Apr 24, 2023 · Plus, my errors happened while the car was parked. When driving, the high voltage battery charges the 12 volt, so its really 14.5 volts or so. (Windshield washers are probably only …

Jun 19, 2014 · If allowed to go too low, a sensor in the battery coolant tank will cause a "Service High Voltage Charging System" message to display. The car may no longer take a charge. The dealer …

Oct 13, 2024 · Heated oxygen sensor (HO2S) 2, bank 1 - low voltage General Electrical Failures [0x00] Status: GM failure record ---------------------------- U183E [0xD83E] Lost Communication with OnStar …

Nov 8, 2021 · common problem on having to reprogram the BECM and HPCM2 ( because of lock out code ) is low battery coolant level or float switch problem ( the switch or the wires ) or the sensor has …

Aug 17, 2017 · Kudos to WOT for developing his battery coolant level reservoir sensor replacement/defeat plug. This device essentially mimics the electrical characteristics of a properly …

Apr 27, 2023 · Circuit/System Testing Vehicle OFF, all vehicle systems OFF, scan tool disconnected, and key removed from vehicle, disconnect the harness connector at the B1C A/C Low Side Pressure …

Jul 3, 2022 · Also see measuring the coolant sensor resistance 2012 "Service High Voltage Charging System &quot... Making a coolant sensor defeat: 2012 "Service High Voltage Charging System &quot...

Dec 28, 2023 · The P1E00 is a generic "there's a problem with battery things" code - basically it'll be triggered whenever the P0AA6 is triggered. And, the P1FFF is also a generic "service high voltage …