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 Kyle N. Your Own Question
Kyle N.
Kyle N., Toyota Technician
Category: Toyota
Satisfied Customers: 5228
Experience:  ASE Master Auto Technician, L1 certified, CA. Smog Lic.
Type Your Toyota Question Here...
Kyle N. is online now
A new question is answered every 9 seconds

I have PO171 trouble code on my 2002 Toyota Camry...

Customer Question

I have PO171 trouble code on my 2002 Toyota Camry... How do you trouble shoot that and can you test a MAF sensor
Submitted: 6 years ago.
Category: Toyota
Expert:  Kyle N. replied 6 years ago.


That code is a fuel system lean code. The first thing you want to do for that code is check the fuel pressure coming into the engine. You need a fuel pressure gauge for fuel injected engines. This will tell you if you have a problem with your fuel pump or a problem with a sensor like an O2 sensor or a MAF.

Related Toyota Questions