evDash OBD2 vs Voltage

evDash OBD2 is a live dashboard and diagnostics multitool for electric vehicles. Connect a compatible OBD2 adapter and view real-time EV data on your phone or Apple CarPlay. evDash is built to support as many electric cars as possible — if a vehicle exposes useful data over OBD2, the goal is to make it work. Main features: • Live EV dashboard with battery, power and driving data • Battery SOC, SOH, voltage, current and charging overview • Cell voltages, temperature data and 12V battery status • Charging graphs and trip energy statistics • Apple CarPlay support • Multi-car garage with quick switching • Service Menu with ECU scan, ECU versions and DTC tools • Pre-purchase battery check and battery health tests • Acceleration and brake tests • TPMS, CAN sniffer and diagnostic export tools • Remote Tuning to help add or improve vehicle support • Local logs, exports and optional remote upload evDash works with supported OBD2 BLE, BT3/SPP, WiFi, MFi/OBDLink, BMW ENET and evDash M5Stack relay adapters. Available data depends on the vehicle model, adapter type and supported vehicle profile. Some cars expose a lot of battery data, some expose only basic OBD2 data, and some are restricted by the vehicle gateway. Which cars are supported, and which data each one provides, is listed in the vehicle support matrix, updated with every release: https://www.evdash.eu/evdash/vehicles/ Reported anomalies — what owners observed after connecting an adapter or during diagnostics, with investigation status and precautions: https://www.evdash.eu/evdash/vehicles/incidents/ evDash Pro unlocks advanced diagnostics, multi-car quick switch, battery internal resistance calculation, cell health tests, graph exports, Service Menu tools and fullscreen diagnostic views. It is available as a monthly or yearly auto-renewable subscription, or as a one-time lifetime purchase. Monthly and yearly plans include the same Pro features. Pricing is displayed in the App Store before purchase and may vary by region. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period; the lifetime purchase is a one-time payment with no renewal. You can manage and cancel subscriptions in your Apple ID account settings. Disclaimer: evDash is a diagnostic tool used to read data from your vehicle and is provided for information purposes only. Use is entirely at your own risk. The developer accepts no liability for any damage to your vehicle, battery, adapter or device, or for any decisions made based on the data shown. Always follow your vehicle manufacturer's instructions. evDash is an independent app and is not affiliated with or endorsed by any vehicle manufacturer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ MFi accessory authorization: - OBDLink MX+ (OBD Solutions LLC) — protocol string com.obdlink, MFi Product Plan ID (PPID): 221699-0001 - Vgate vLinker FS/MS (ShenZhen CheBoTong) — protocol string com.vgatemall, MFi PIDs: 649626-099130 (vLinker FS), 649626-112572 (vLinker MS) Both accessory manufacturers have confirmed that this app (bundle ID sk.next176.evdashapp) has been added to their MFi Product Plan.

Clear SHVCS, and avoid the tow truck when the battery or BECM fails — the most complete diagnostic and control app for the Chevrolet Volt, Opel Ampera (Vauxhall), Chevy Bolt, Opel Ampera-e and Spark EV. Volt / Ampera: 2011-2019. Bolt / Ampera-e: 2017-2023. Spark EV: 2014-2016. HV UNLOCK — STAY ON THE ROAD A BECM or battery pack failure (P0AFA) can leave the car undrivable and waiting on a dealer. HV Unlock resets the condition so you can keep driving — the difference between getting home and calling a tow truck. The Service High Voltage Charging System (SHVCS) message is a separate problem: the car still drives normally but stops charging. Clear it to get charging working again, including enabling charging on Ampera 2012. This clears the fault condition; it is not a hardware repair. If the cause is still there, the fault can return. BATTERY HEALTH • Usable capacity in Ah, state of health, and degradation tracked over time • All 96 cell voltages live, cell delta, average and minimum cell voltage • Weak Cell active test with guided instructions and a clear verdict • NEW Capacity vs Mileage — how your pack compares with other cars at your mileage • NEW Resistance Index — internal resistance against a typical car of the same model year, flagged normal, elevated or high (supported models) • Six pack temperatures, coolant temp, heater power, conditioning mode • Module programming dates in HW Info — check whether a pack or module was replaced • Compare vehicles side by side; export, import or edit your history BOLT AND AMPERA-E OWNERS The two numbers you actually want, with no manual PID setup: usable capacity in Ah and cell-voltage spread. Track capacity over time instead of guessing from range, and check module programming dates to see whether your pack was replaced. RECENTLY ADDED • Dashboard Skin: switch the cluster between Volt and ELR designs (2016-2018 Volt and Cadillac ELR, separate purchase) • Tire rotation: write new wheel positions without a TPMS programming tool • Charging schedule with weekly departure times, and automatic stop at a chosen EV range • Module restart, oil and fuel life reset, HVAC Afterblow, engine speed control VEHICLE CONTROL Remote start and climate pre-conditioning over Bluetooth for cars before 2019, battery heater for cold-weather range, door and window operation, engine ON / OFF / Release, and remote wake to query modules without powering the car on. PROFESSIONAL DIAGNOSTICS Deep DTC scan across every discovered module, including SW-CAN. Module reset and DTC clearing. 100+ live parameters across 11 charted screens: Efficiency, Powertrain, HV Battery, HV Battery+, Cells, Charger, Charger+, Climate, 12V, 12V Power and TPMS — HV power and current, inverter voltage, MGA and MGB motor temps, transmission fluid temp, engine speed, oil and coolant temps, EGR (Gen 2), charger AC and DC voltage, current and power, HVAC temps and blower, per-module 12V supply for ECM, HPCM1/2, BECM, EBCM, EPS and ASCM, and tire pressure for all four wheels. ADAPTERS Standard ELM327 adapters cover most diagnostics and monitoring. For full functionality — SW-CAN access, HVAC and Infotainment, remote start and door unlock — use a vLinker MC / MC+ / MS or OBDLink MX+. Core diagnostics and monitoring are free. Advanced control, full live monitoring and the dashboard skin are paid upgrades. More info: https://thanxx.github.io/voltageapp