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 vipertech763 Your Own Question
vipertech763, automotive technician
Category: Dodge
Satisfied Customers: 1854
Experience:  gold certified, dodge viper certified
Type Your Dodge Question Here...
vipertech763 is online now
A new question is answered every 9 seconds

What does code po4o4 mean? should i replace my egr vavle

Customer Question

what does code po4o4 mean? should i replace my egr vavle
Submitted: 10 years ago.
Category: Dodge
Expert:  vipertech763 replied 10 years ago.
Good evening, in order to help you further, I will need to know the year,make, model and engine size.
Customer: replied 10 years ago.
Reply to vipertech763's Post: dodge intrepid 2000 2.7 engine
Expert:  vipertech763 replied 10 years ago.

I checked and there are no service bulletins related to this code. To check it accurately, you would need a scanner so that you can see certain readings while checking the egr circuits. The most common problem is the EGR valve assembly.

Here is the info on the replacement:



The EGR valve attaches to the rear of the right cylinder head.

  1. Disconnect negative battery cable.
  2. Remove air inlet tube and resonator and bracket.
  3. Disconnect electrical connector from solenoid.
  4. Remove EGR upper tube screws at EGR valve.
  5. Remove EGR valve mounting screws.
  6. Remove screws from EGR lower tube at exhaust manifold.
  7. Remove EGR valve and lower tube as an assembly.
  8. Clean gasket surfaces. Discard old gasket. If necessary, clean EGR passages.

Let me know if you need more help or have more questions.