1. © A.T.T.S. Inc. 2015 IM Solutions May, 20 2015 Sessions #11: Repair Tech Training 1:30 a.m. – 12:30 p.m. G Truglia What’s Needed To Fix The PO420 & PO171 DTCs?

2. © A.T.T.S. Inc. 2015 What’s needed to fix the PO420 & PO171 DTCs? How do these DTCs set? What tools and equipment are needed to diagnosis and repair these DTCs? What effect does reprograming have on these DTCs? What Will Be Covered:

3. © A.T.T.S. Inc. 2015 Training Why… without the proper education technicians will not diagnosis the vehicle correctly. Example: A common mistake that is overlooked with a P0420 DTC is not finding the root cause of the problem. Just installing a new catalytic converter won’t always solve the problem. What’s Needed To Fix The PO420 & PO171 DTCs?

4. © A.T.T.S. Inc. 2015 Equipment Without the proper tools the vehicle cannot be diagnosed and repaired properly. Examples: A common mistake that is overlooked with a P0171 DTC is not reviewing scan tool Freeze Frame. Many vehicles are not properly diagnosed without the use of a Smoke Machine or the proper repair information. What’s Needed To Fix The PO420 & PO171 DTCs?

5. © A.T.T.S. Inc. 2015 Information Is King

6. © A.T.T.S. Inc. 2015 Vacuum leaks Mass air flow (MAF) sensor Clogged fuel filter or fuel injectors Worn fuel pump Voltage drop anywhere in the fuel delivery circuit HO2S – AF, exhaust gas recirculation (EGR), exhaust leaks, Secondary air Positive crankcase ventilation (PCV) valve calibration EVAP purge Dipstick sealing (mostly European vehicles) Mechanical and wrong powertrain control module (PCM) command What Causes A P0171 Lean Condition

7. © A.T.T.S. Inc. 2015 2006 Toyota Corolla With P0171 System Lean DTC

8. © A.T.T.S. Inc. 2015 2012 Nissan P0171 Mass Air Flow Sensor Information Is An Important Tool

9. © A.T.T.S. Inc. 2015 What Effect Does Reprogramming Have On These DTCs?

10. © A.T.T.S. Inc. 2015 2002 Toyota Camry P0420

11. © A.T.T.S. Inc. 2015 2002 Toyota Camry P0420

12. © A.T.T.S. Inc. 2015 2002 Toyota Camry P0420

13. © A.T.T.S. Inc. 2015 2002 Toyota Camry P0420

14. © A.T.T.S. Inc. 2015 2005 Mazda 6 V6 3.0L P0420 - 421 Bank 1 Bank 2

15. © A.T.T.S. Inc. 2015 2001 Nissan Xterra

16. © A.T.T.S. Inc. 2015 How Do These DTCs Set?

17. © A.T.T.S. Inc. 2015 1998 Lincoln 4.6L MIL LAMP ON DTC P0420 and Maybe a P0430 Next How Do These DTCs Set?

18. © A.T.T.S. Inc. 2015

22. Mass Air Flow Sensor This Is The Fix…Cleaning The Mass Air Flow Sensor

23. © A.T.T.S. Inc. 2015

24. TSTseminars.org Reaching thousands all around the world… YouTube Channel tstseminars

25. © A.T.T.S. Inc. 2015 Interested in more training? p. 845 628-1062 or 845 628-6668 f. 845 628-9109 e. gt@attstraining.com w. ATTStraining.com Thank you !