WOTs COOLANT LEVEL SENSOR / SERVICE HIGH VOLTAGE...
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 …
2011-2014 SERVICE HIGH VOLTAGE CHARGING SYSTEM, Service Bulletins
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 …
Battery coolant level sensor tear-down - GM Volt Forum
Apr 24, 2023 · When driving, the high voltage battery charges the 12 volt, so its really 14.5 volts or so. (Windshield washers are probably only checked while the car is turned on, so its also using a higher …
"Service High Voltage Charging System" Fix... - GM Volt Forum
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 …
Battery Coolant and other Fluid Levels FAQ - GM Volt Forum
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 …
Service High Voltage Charging System error - GM Volt Forum
Jul 3, 2022 · Also see measuring the coolant sensor resistance 2012 "Service High Voltage Charging System "... Making a coolant sensor defeat: 2012 "Service High Voltage Charging System "...
2012 Service High Voltage Charging System with WOT's Sensor Defeat …
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 …
p0131 & p0137 & P0300 & p0171 all at the same time - GM Volt Forum
Jan 3, 2023 · P0131 - O2S Circuit Low Voltage Bank 1 Sensor 1. This DTC determines if the O2 sensor circuit is shorted to low. P0137 - O2S Circuit Low Voltage Bank 1 Sensor 2. This DTC determines if …
2014 Volt displays "Service High Voltage charging system"
Jun 16, 2020 · Unlike 12V systems however, the potential within high voltage systems means that insulation breakdown is also a cause for loss of isolation. Because the battery cooling system and …
U183E | GM Volt Forum
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 …