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I am getting intermittent p0420 since a year...maybe get it 4+ times every oil change since a year. I did have oil in my spark plug wells (3 of...
Passed the smog test. Also, oil level still near high even after 2k miles since oil change. Only got p0420 once in last 2k. I bet changing spark...
Got p0420 yesterday 1000 miles after oil change & the maintenance (spark plug & PCV valve replacement). Will continue to monitor if and when I get...
And no p0420 code which I am now somewhat positive that it was related to oil consumption or a spark plug misfiring due to oil leak & rich mixture...
After Spark plugs and PCV valve replacement, did oil change. Since oil change have driven approx 1000miles (20% highway). Oil level still slightly...
Let us know your oil consumption after your 3k mile road trip. My Prius also has had high oil consumption on highways and less hp. Recently...
The 2 leaky SP were 1 and 3 starting from the left. So it can't be the bolts. Likely the Value cover gasket seal.
Thanks . It was the base. I guess I should have replaced the value cover gasket.
Was wondering if switching to this oil helped in the oil consumption or CAT p0420 issue: Mobil 1 5W-30 high mileage oil
Check engine light off. So I am 100% sure it came because of p0420. Hoping new spark plugs, PCV will cause less oil consumption and permanently...
If valve cover gasket was the problem, wouldn't I find oil in all 4 spark plugs ? In my case 2 we're dry and 2 had oil .
Ok. Any recommendation considering I had oil on 2 of my spark plugs and my oil consumption issue ? Pls see the thread above
Question: how many hours of labor to replace the valve cover gasket ? Thanks
Similar issue. 2007 Prius with 237k miles. Lately has given p0420 cat code 8 times since last 2 oil changes(6 months). Also , since last 2 oil...
