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P0401 OBD-II Trouble Code: EGR Flow Malfunction – Rx Mechanic
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Infamous obd code p0401[followup #2] so error p0401 was caused by a faulty egr cooler. it was Code p0401?: i have a p0401. i already changed the egr valve andHow to diagnose and repair code p0401 egr insufficient flow on a honda.
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![[followup #2] so error P0401 was caused by a faulty EGR cooler. It was](https://i2.wp.com/preview.redd.it/b7wznvafswg91.jpg?auto=webp&s=b57b984d6a55190b394813ed8c429a14328f5583)
P0401 – exhaust gas recirculation flow insufficient detected (ford
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Decoding p0401: understanding and fixing the egr system in toyota prius
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