1995 Subaru Legacy - Code P0420, What Next? Liquid Piston Engine The Next Generation Of Power

Check your warranty status, verify the. The car is a 96 legacy with about 450k miles, at around 325k it did this for the first time and we replaced the cat (with a. What are some repair tips for addressing a p0420 code in a subaru

P0420 Code: 7 Common Causes and Quick-Fix Solutions - YouTube

Before replacing any parts, it’s essential to diagnose the p0420 code properly

Use an obd2 scanner to confirm the.

What must be done next is to determine the correct answer to that question, by testing the rear o2 sensor and by. If you’re dealing with a p0420 after replacing the catalytic converter, don’t immediately assume the new converter is. Repair information for p0420 subaru code Learn what catalyst system efficiency below threshold means, location and how to repair.

After swapping a used, jdm sourced ej255 into my 5th gen lgt (old engine threw a bearing) i now have the p0420 code being thrown.