Audi p034 1.p0343 Fault Code Sometimes the engine shakes. EPC lights sometimes come on.

Possible cause of failure: air supply system.

Air intake system is an important part of electronically controlled fuel injection system. Faults that lead to inaccurate gas supply mainly include: leakage of intake pipe and various valves, such as broken intake manifold, poor seal of intake manifold, vacuum tube falling off, and lax closure of PCV valve /EGR valve. For example, under normal circumstances.

The opening of the idle control engine and the air intake must strictly follow a certain functional relationship, that is, the air intake will increase when the idle valve is opened. When the air supply system leaks, the air intake and the opening of the idle speed control valve can't follow the original functional relationship, which makes the air flowmeter unable to accurately measure the real air intake, resulting in inaccurate near-intake signals obtained by the engine electronic control unit (ECU), which leads to misjudgment and unstable idle speed of the engine.

Extended data:

In the 1920s, Audi, Horsey, dkw and Rover dealt with different market segments respectively and lived in peace. With the use of assembly lines and modern machinery and equipment, the production capacity has risen rapidly, which requires enterprises to continuously expand the market and increase sales at a great cost.

The price war triggered by foreign automobile manufacturers has caused great losses to automobile enterprises. German automobile industry finds it difficult to solve these financial problems and needs the support of bank loans. As a result, Saxony Bank met Rasmussen's loan demand and laid the foundation for the expansion of Rasmussen Group.

In order to safeguard its interests in the automobile industry, Saxony Bank established an automobile alliance based on four companies, with total assets of14.5 million Deutsche Mark.

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