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Q: Codes P0171 and P0174

asked by on

I have codes P0171 and P0174 on my code reader.

A: Codes P0171 and P0174 pertain to the engine...

Codes P0171 and P0174 pertain to the engine running lean on both bank one, and bank two, meaning that both sides, or the complete engine, is running lean. The lean condition could be one of several possible causes. The intake gasket could be leaking, in which case, the intake has to be removed, and the gaskets replaced. The number six and eight injectors could be crossed, or the o-ring seal on the brake master cylinder is faulty. Lastly, the injectors could have deposits built up, in which case they would need to be cleaned or replaced. I recommend having a mechanic, such as one from YourMechanic, scan and check these components to see if they need service.

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