What are the reasons for the flashing fault light of a 24V parking generator?
2 Answers
The reasons for the car generator warning light to illuminate are: Poor gasoline quality: Generally, this occurs when low-quality gasoline is added at an unregulated gas station, leading to incomplete combustion of the air-fuel mixture during engine operation, which triggers the engine fault light. This does not affect driving safety but may cause some degree of harm to the engine. Oxygen sensor failure: There are two oxygen sensors installed in the car, one before and one after the three-way catalytic converter. The front oxygen sensor detects the air-fuel ratio under different engine operating conditions, and the ECU adjusts the fuel injection amount and calculates the ignition timing based on this signal. Airflow sensor failure: The airflow sensor, also known as the air mass meter, detects the amount of air intake and converts it into an electrical signal sent to the ECU. Based on the optimal air-fuel ratio, it indirectly allows the ECU to determine how much fuel to inject.
I've been driving heavy-duty trucks for over twenty years, and the 24V parking generator warning light flashing is quite common during long-haul transportation, mostly due to voltage instability or overload. Once, while driving through mountainous areas at night, the light suddenly started flashing, giving me a scare. After stopping to check, I found that the generator pulley was loose, causing fluctuating speeds and unstable output. Another time, it was due to corroded battery terminals in winter, leading to poor conductivity. If the voltage is too high, it can burn out electrical components, while too low means the battery won't charge fully, eventually ruining the entire system over time. I believe drivers should immediately turn off additional loads like air conditioning or lighting when they see the light flashing, giving the generator a break. Safety is the top priority—don’t hesitate to pull over at a rest stop and use simple tools to check the voltmeter. If there’s no improvement, head to a professional repair shop as soon as possible. Ignoring this warning light can turn a minor issue into a major problem, compromising driving safety and costing extra time and money.
