What happened to the fault light when Volkswagen sagitar picked up the car?

The fault light of sagitar engine in Pacific Auto Network is on because of engine fault or poor combustion. If the parameters collected by some electrical components, circuits or some sensors of the engine are beyond the reasonable range, the engine will report a fault code, which will be displayed in the form of a fault light according to the different importance of the fault code.

1. Engine electrical fault: This kind of fault includes the damage of some sensors, such as air flow meter, throttle idling motor, intake pressure sensor, oxygen sensor, ignition coil, spark plug, water temperature sensor, crankshaft position sensor or camshaft position sensor, etc. It also includes some control units or actuators, such as engine computer, ignition computer, fuel pump, camshaft adjustment solenoid valve and so on. In addition to these electrical components, wires between these components may also cause failures.

Second, the causes of engine mechanical failure: for example, the change of fuel quality, the use of some fuel with more additives, or the air intake, throttle or spark plug are covered with carbon deposits, and the air leakage of some air intakes is lower than the standard value, which will also produce corresponding fault codes, and in serious cases, the engine fault light will be reported on the instrument. Chain elongation is also common, which requires us to measure whether the chain is within the standard range. If it is stretched, it needs to be replaced.

In any case, when the engine fault light is on, first look at whether it is a red or yellow warning light. If it is a yellow warning light, please send it to the repair shop for repair as soon as possible. If it is a red fault light, it is not recommended to start the vehicle, so you can only seek rescue.