What is the P30C0 fuel quality defect fault?
2 Answers
P30C0 fuel quality defect fault refers to a defect in fuel quality. Gasoline quality inspection: If the color darkens, it indicates that the gasoline has been stored for too long and has undergone a reaction; gasoline has a faint aromatic smell due to the presence of aromatic hydrocarbons in the gasoline, so you can slightly smell the gasoline to check its odor. Actual measurement: Measure the octane number and density of the gasoline. Theoretically, the higher the octane number, the more resistant the gasoline is to burning. At the same time, a gasoline density between 0.735 and 0.745 is preferable. Currently, gasoline at gas stations is generally National Standard IV gasoline, with an octane number typically between 93% and 94%. There is also National Standard V 92-octane gasoline, with an octane number generally between 92% and 93%, as well as higher-grade 97 and 98-octane gasoline.
Last time my car showed the P30C0 code, I was also confused. After checking the information, I realized it has a lot to do with fuel quality. Modern cars have highly sensitive high-pressure fuel pumps. If you use gasoline with too many impurities or water content exceeding the standard, the system will immediately detect fluctuations in fuel injection pressure and trigger the warning light. Once, after refueling at a remote gas station, I encountered this issue. The mechanic said the fuel lines were clogged with gum deposits from the fuel, and it was only resolved after replacing the fuel filter and cleaning the fuel tank. I suggest you first check the fuel you recently used and then test the fuel pressure value. If the gas station’s fuel quality is poor, it can also cause chain damage to the fuel injectors. Remember to stick to major brand gas stations in the future—the small savings at smaller stations aren’t worth the repair costs.
