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I recently got a P0671 code. It's been approximately 5 years since I changed my glow plugs and harnesses. Since it isn't too expensive, I am going to change them again. I'm on the fence as to weather or not to change the module too, just trying to save some money. Any thoughts or suggestions? Thanks
Modules are prone to failure setting false glow plug codes. I would test the glow plugs with an meter. If they all pass but the light remains most likely the module is faulty.
I prefer to test from the module to start as it is easy to access.
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P0671 Code
