What is the reason for the alternating flashing of the fault light on BYD charging piles?
3 Answers
BYD charging pile fault light alternating flashing is due to poor contact between the charging pile and the charging cable. Taking BYD Qin as an example, the following are the specific details of BYD Qin: Body dimensions: The length, width, and height are 4765 mm, 1837 mm, and 1495 mm respectively, with a wheelbase of 2718 mm. Power: Equipped with a 1.5L naturally aspirated engine, this engine has a maximum power of 81kw, a maximum power speed of 6000 rpm, a maximum torque of 135 Nm, and a maximum torque speed of 4500 rpm. This engine is equipped with multi-point fuel injection technology and uses an aluminum alloy cylinder head and block. Suspension: The front suspension uses MacPherson independent suspension, and the rear suspension uses a torsion beam non-independent suspension.
I noticed the fault light on this BYD charging pile is flashing quite annoyingly. I encountered the same issue last time and it took me a while to figure it out. The most common cause is power supply problems, such as unstable voltage or grounding faults at home, which trigger the charging pile's protection mode and cause the light to flash. It could also be due to internal components like relays or control boards malfunctioning, leading to abnormal current and triggering the flashing warning. Overheating is another factor—poor heat dissipation in summer or a fan clogged with dust can both activate the fault. In my case, the plug wasn’t inserted tightly, and re-securing it fixed the issue. But for safety, I immediately turned off the power and checked the cables. Preventive measures are simple: regularly clean the fan vents to ensure good ventilation, and avoid overly hot or humid charging environments. BYD’s quality is solid, but occasional glitches in electronics are normal—just don’t try to disassemble it yourself, as it’s easy to get an electric shock.
As a car owner with some knowledge of electrical systems, I believe that the flickering of charging pile lights is essentially a system error response. For instance, it activates protection when the input voltage exceeds 230 volts or drops below 180 volts, indicating overvoltage or undervoltage conditions. Current control failure is another possibility, where relay contact erosion leads to overcurrent detection. Software issues, such as firmware bugs, are common causes and can often be resolved by updating the program—I can check error codes by downloading the BYD app. External interference, like electromagnetic disturbances during thunderstorms, can also trigger false alarms. When diagnosing, I usually disconnect the power for five minutes to attempt a soft reset; if that doesn’t work, I test socket stability by switching outlets. The key is not to ignore it, as continuous flickering may damage the battery and affect charging efficiency. For maintenance, avoid placing it in high-temperature areas and regularly clean the plugs to prevent oxidation.
