Dilution of Yinglang Fuel Correction System

P0 17 1 fault code indicates that the system (air-fuel ratio) is too lean (line 65438 +0).

Lean fuel means that the electronic control unit (ECU) controls fuel delivery by increasing or decreasing the opening time of the injector, so that the engine can obtain the best air-fuel ratio (the mass ratio of air to gasoline is 14.7: 1). Too rich air-fuel ratio means too much oil transportation, and too thin air-fuel ratio means too little oil transportation.

This fault code will appear if the adaptive fuel control system has reached the compensation limit, but the air-fuel ratio is still lean. Causes of failure include air leakage behind air flow (MAF) sensor, PCV system leakage, oxygen sensor failure, exhaust leakage near oxygen sensor, EGR leakage, air flow (MAF) sensor failure, dirty fuel filter, insufficient fuel supply from fuel pump, fuel pressure regulator failure, fuel injector blockage, engine speed sensor failure, electronic control module (PCM or ECM) failure, etc.

Clear the fault code every time after troubleshooting the car.

Extended data:

P0 17 1 The causes of the fault code include air leakage behind the air flow (MAF) sensor, air leakage in the PCV system, oxygen sensor failure, exhaust air leakage near the oxygen sensor, EGR air leakage, air flow (MAF) sensor failure, dirty fuel filter and insufficient fuel supply in the fuel pump.

The specific solutions include: checking the oxygen sensor; Check the throttle intake manifold for air leakage. Failure of fuel regulation may lead to default operation, such as hard shift, anti-lock braking system/? Traction control system indicator lights up, etc. Do fuel system maintenance, run a few kilometers at high speed, and finally replace MAF to solve the problem.

References:

Baidu Encyclopedia-Automobile Fault Code