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 · 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 …

Nov 8, 2021 · I have a 2012 Volt (190,000mi) and had the “Service High Voltage Charging System”, DTC a few years ago and had purchased the VCX Nano that I reprogrammed the vehicle many times …

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 …

Jan 11, 2018 · The last 9000 miles without the ability to charge due to the Service High Voltage Charging System light. I had it reset twice at the dealers - no loss of fluid. They wanted to charge me …

Jul 4, 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...

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 …

Jan 2, 2024 · P1E00 - request MIL P1FFF - service high voltage system P0AA6 - Hybrid/EV Battery Voltage System Isolation Lost P0ABB - Hybrid/EV Battery Voltage Sensor Circuit Performance …

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 …