There are a few potential causes for the P1522 code:
- Idle control valve: The most likely cause of the P1522 code is a faulty idle control valve. The idle control valve regulates the amount of air that flows into the engine when it is idling. If the idle control valve is not working properly, it can cause the engine to idle too high or too low, or to stall.
- Throttle body: The throttle body is another potential cause of the P1522 code. The throttle body controls the amount of air that flows into the engine when it is running. If the throttle body is not working properly, it can cause the engine to idle too high or too low, or to stall.
- Intake air leak: An intake air leak can also cause the P1522 code. An intake air leak is a hole in the air intake system that allows unmetered air to enter the engine. This can cause the engine to run too lean, which can lead to a high idle.
- Faulty electrical connection: A faulty electrical connection can also cause the P1522 code. A faulty electrical connection can prevent the idle control valve or the throttle body from receiving power, which can cause the engine to idle too high or too low, or to stall.
Parts that need to be replaced
- Idle control valve
- Throttle body
- Intake air leak
- Faulty electrical connection
