How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron
Ron, ASE Certified Technician
Category: Nissan
Satisfied Customers: 33477
Experience:  34 years of automotive Repair
7276279
Type Your Nissan Question Here...
Ron is online now
A new question is answered every 9 seconds

Cel on codes po420 cat EFF low b1 and poo57 ho2s2 b2 heater

Customer Question

Cel on codes po420 cat EFF low b1 and poo57 ho2s2 b2 heater cuircut low ?
Submitted: 12 days ago.
Category: Nissan
Expert:  Ron replied 12 days ago.

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

Expert:  Ron replied 12 days ago.

The fault code P0420 in most cases set due to a failing catalytic converter (Bank 1) . To check this to be sure I have enclosed the test steps in the link below.

https://dl.dropboxusercontent.com/u/104923897/P0420%20Nov%2028.pdf

The code P0057 sets in most cases due to a failing heater in the HO2S sensor. Bank 2 is the driver's side bank. In order to determine if the HO2S has failed I have enclosed the steps to check it in the link below as well.

https://dl.dropboxusercontent.com/u/104923897/P0057%20Nov%2028.pdf

Related Nissan Questions