If you’re a Chevy Volt owner, you know the frustration of recurring SHVCS faults preventing charging. Clearing these faults with an OBD2 scanner can impact emissions testing by resetting monitors. This guide explains how to reset your Chevy Volt’s OBD2 drive miles and restore emission monitors after clearing SHVCS faults.
Reprogramming the HPCM2 and BECM modules with a VCX Nano and ACDelco TDS subscription can permanently resolve recurring SHVCS issues. After reprogramming, you’ll need to complete a specific drive cycle to restore your emission monitors. Contrary to some advice, you don’t need to drive hundreds of miles.
A successful drive cycle usually involves driving in ICE mode for about 20 minutes on the freeway, maintaining a constant 55 mph for 5-10 minutes of that time. Allow the car to sit undisturbed overnight for at least 8 hours. This process may need to be repeated, focusing on specific monitors that haven’t reset. For example, maintaining a steady 55 mph for at least 3 minutes is often crucial for resetting the O2 sensor and Fuel System (trim) monitor.
While a single drive cycle can often restore all monitors, multiple attempts might be necessary. Using a cheap OBD2 reader with an app like Torque for Android allows you to monitor the status of each emission monitor in real time. This eliminates guesswork and enables you to tailor your driving to target specific monitors needing attention.
Don’t rely on potentially misleading advice about driving excessive distances. Research the GM drive cycle online and use an OBD2 reader to track your progress. This approach saves time and ensures your Volt passes emissions testing after addressing SHVCS faults.
