© 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.

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Presentation transcript:

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

© A.T.T.S. Inc 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:

© A.T.T.S. Inc 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?

© A.T.T.S. Inc 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?

© A.T.T.S. Inc Information Is King

© A.T.T.S. Inc 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

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

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

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

© A.T.T.S. Inc Toyota Camry P0420

© A.T.T.S. Inc Toyota Camry P0420

© A.T.T.S. Inc Toyota Camry P0420

© A.T.T.S. Inc Toyota Camry P0420

© A.T.T.S. Inc Mazda 6 V6 3.0L P Bank 1 Bank 2

© A.T.T.S. Inc Nissan Xterra

© A.T.T.S. Inc How Do These DTCs Set?

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

© A.T.T.S. Inc. 2015

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

© A.T.T.S. Inc. 2015

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

© A.T.T.S. Inc Interested in more training? p or f e. w. ATTStraining.com Thank you !