What is the reason for the BYD Qin dashboard displaying 'Please check the power system'?

[LeGrace]

The reasons for the BYD Qin dashboard displaying 'Please check the power system' are: 1. The low-voltage battery is dead; 2. There is a fault in the high-voltage power battery system; 3. There are fault codes in the engine electronic control system. Taking the BYD Qin New Energy 2020 model as an example, its body dimensions are: length 4675mm, width 1770mm, height 1500mm, wheelbase 2670mm, and luggage compartment volume 450l. The BYD Qin New Energy 2020 model has a total motor power of 100kw and a total motor torque of 180nm, matched with an electric vehicle single-speed transmission.

[Iker]

A few days ago, my Qin also displayed this warning, so I immediately pulled over and contacted the 4S shop. The technician diagnosed it as a false alarm from the battery management system sensor, possibly caused by loose wiring harness or unstable voltage. In hybrid vehicles, temperature fluctuations can easily trigger such minor issues. I learned that when the dashboard shows a ‘Check Powertrain’ alert, you shouldn’t keep driving—scan the error codes as soon as possible. Otherwise, battery overheating or motor issues might lead to bigger troubles. Regular maintenance checks on high-voltage connections and system software updates can reduce such warnings. In short, safety first—don’t risk DIY repairs; just take it to a professional shop.

[MacMiles]

As someone who loves tinkering with cars, I feel compelled to share some practical knowledge. This warning on the BYD Qin is often related to the powertrain system, such as issues with the high-voltage battery pack or control unit failures. Possible causes include overvoltage, coolant leaks, or simple software bugs. My usual approach is to use an OBD tool for a self-check first, identify the error codes, and then decide whether repairs are needed. For instance, battery imbalance or temperature control failure could trigger the alarm. Paying attention to unusual vehicle noises and changes in energy consumption can help with early prevention. I recommend car owners keep a small diagnostic device handy for emergency checks—it saves time and avoids misdiagnosis.

[SamuelLynn]

When the dashboard shows a 'Check Power System' warning, I immediately find a safe place to pull over. This is usually a signal of issues with the power battery, motor, or control module, such as overheating triggering system protection. The immediate risk is sudden deceleration or the vehicle stalling, especially on highways. Don’t hesitate—turn off the engine right away, turn on the hazard lights, and call for roadside assistance or head straight to a 4S shop. They can professionally diagnose and fix the problem.

[SebastianDella]

After driving the Qin for a long time, I've encountered this minor glitch a few times. Usually it's nothing serious, like a system false alarm or temporary software lag. Try restarting the vehicle—if the warning disappears, that's the easiest fix. If it persists, it might be a blown fuse or loose wiring in the electrical control system; check the simple components first. Don't delay, as small issues could escalate into costly charging failures. During regular maintenance, have the technician scan the system for upkeep—it saves money and hassle in the long run.

[MarleyMarie]

My Qin is the hybrid version, and this alert relates to power switching issues, such as abnormal battery charging or engine collaboration failure. Possible causes include inverter malfunction, improper temperature regulation, or sensor errors. I usually pay attention to battery balance and startup modes, and rely on professional diagnostics when problems arise. Timely handling can extend the system's lifespan.