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 Dan Your Own Question
Dan, Technician
Category: Nissan
Satisfied Customers: 24211
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Type Your Nissan Question Here...
Dan is online now
A new question is answered every 9 seconds

Titan: Yes sir I have a 2004 Nissan Titan 107K miles with P0420

Customer Question

Yes sir I have a 2004 Nissan Titan 107K miles with P0420 & P0430 codes. Engine hesitates on acceleration. Fue consumption increased, changed plugs and filter, used gas treatment higher octane gas no change. Reading some forums indicate plugging cat converter??
Submitted: 2 years ago.
Category: Nissan
Expert:  Dan replied 2 years ago.
Hello, my name is ***** ***** I'm here to help get your problem solved. I agree this means your catalytic converter has clogged. You can remove front oxygen sensor and install pressure gauge. If pressures goes over a few psi while reving engine then replace the converter. Let me know how it goes or if you have more questions, thanks.
Customer: replied 2 years ago.
Thanks heard it be a cracked exhaust manifold also?
Expert:  Dan replied 2 years ago.
It could be but that is not as common. It could be any exhaust leak but more likely failed converter. Let me know how it goes, thanks.

Related Nissan Questions