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, ASE Certified Technician
Category: Dodge
Satisfied Customers: 35503
Experience:  ASE Certs
Type Your Dodge Question Here...
Ron is online now
A new question is answered every 9 seconds

How do I correct the MIL code P21B2 Excessive Time

Customer Question

How do I correct the MIL for the code P21B2 Excessive Time to enter closed loop Nox absorber control
Submitted: 1 year ago.
Category: Dodge
Expert:  Ron replied 1 year ago.
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.In order to be able to be able to try and help you we need to know what it is your are working on, need to know the year,make and mode as well as engine size. Post back when you can with the complete information and I will see if I can help you with this fault code.
Customer: replied 1 year ago.
2010 Ram 3500 6.7 liter. Just installed a K&N cold air box filter system. Currently the code also disabled the remote start capability. Currently the MLI has cleared.
Expert:  Ron replied 1 year ago.
The code P21B2 indicates the system is taking Excessive Time to Enter Closed Loop. To determine the cause you are going to need to do some testing. See the steps in the link below. Copy and paste the link to your browser to open and view it.