What is the reason for the 4lo flashing?

1 Answers
DelAshley
07/30/25 6:42am
4lo flashing is caused by: 1. Engine misfire leading to excessively high exhaust temperature; 2. Poor operation of individual engine cylinders; 3. Overly rich air-fuel mixture causing poor combustion. The inspection steps for 4lo flashing are: 1. Check the condition of spark plugs and high-voltage wires; 2. Check if the cylinder pressure is normal, and if not, inspect whether the valves and cylinder gasket are damaged; 3. Check the fuel injection system. Common faults in automotive electrical systems include: 1. Starter motor spins but the engine does not crank when the ignition switch is turned on; 2. Poor operation of instruments on the dashboard; 3. Malfunctioning of various vehicle lights; 4. Air conditioning system not working.
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