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: 24418
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

2002 Altima: pulling..p100..a knock sensor code for a few months that

This answer was rated:

2002 Altima in safe mode. pulling codes P1800 as well a codes for MAS. Had a knock sensor code for a few months that was still on there. 195,000 miles. Ran fine until I let it sit for 3 months...since then the VIAS and MAS codes and safe mode. Cleaned MAS to no avail. Should I replace the MAS first or the VIAS. If the MAS, can I substitute the cheaper maxima for the $400 Altima sensor?
What other codes are you getting? Thanks.
Customer: replied 7 years ago.
P1102, P1800 P0103,.......and p0328 (which has been there for a year)
Ok, P1800 is almost always caused from the VAIS solenoid. P1102 and P0103 is usually the mass airflow sensor. P0328 is a knock sensor code which is likely a bad knock sensor or possibly wire. I would just replace the 3 components since they are all unrelated and common for these codes. Let me know if you have questions, thanks.
Customer: replied 7 years ago.
Because the Altima MAS is so expensive, Ive heard it caould be replaced by a cheaper Maxima MAS. Is that true? and after I cange everything, do I need to do something special to get the Safe Mode to go off or will that happen automatically?
It will get out of safe mode automatically.......If your trying to save money you could get a used maf from a lower mileage vehicle.....You can go to sort by price and have them ship it to you. Let me know if you have questions, thanks.
Dan and 3 other Nissan Specialists are ready to help you