First P0303 codes and now P0420! -

Scion xA/xB 1st-Gen Drivetrain & Power Engine and transmission discussions...

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Old 12-07-2017, 03:12 AM   #1
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Default First P0303 codes and now P0420!

First P0303 codes and now P0420! Hi guys,

I hope someone can solve this mystery. I admit I'm absolutely Amish with cars.

Own a 2005 xB with 230,000 miles. She has had zero issues till late.

A year ago she started eating motor oil. Not major. No leaks, but I need to top off every two months.

Also it had the third cylinder coil (refurbished) replaced three years ago and then again last year with a new one. Good to go for a year.

Past month, it has been in the shop 3 times with the misfire codes for the third cylinder. Mechanic changed the plug, then the coil, then the injector. Car never seemed completely fixed. Was better but still a bit sluggish.

Then got love tapped in the front. Minor body damage. No idea if that's related, but the next day, after a bad storm, the the lights came back on up with P0420 codes and is running even more sluggish.

I'll call my mechanic in the morning. he did do a compression test last week and said it was fine. No idea if he did a leak test.

Again, absolutely Amish. An ex city slicker now living in rural GA. This is my first car.

Any ideas to pitch my mechanic would be greatly appreciated.

Last edited by MR_LUV; 12-07-2017 at 12:00 PM. Reason: Duplicate Post Removed by Moderator
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