Question about 2002 Proton 400
Posted by Anonymous on
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Proton Wira P0170 P0172
code p 0171 refers to system too lean bank 1===causes ---intake / exhaust leak---AIR system---MAF/VAF sensor ---fuel pressure / pump/ regulator--injectors---heated oxygen sensor (HO2S)
code p 172 refers to system too rich bank 1====causes ---intake blocked ---EVAP canister purge valve ---fuel pressure --- EGR system--- injectors---HO2S
as the HO2S is in both codes , check/ replace it as it reports to the ECM for air /fuel mixture settings and if faulty it can set to too lean or too rich or swap between the extremes
Posted on Nov 02, 2016
Tips for a great answer:
Nov 02, 2016 | Proton Cars & Trucks
Feb 26, 2015 | Proton Cars & Trucks
Jul 15, 2014 | Cars & Trucks
Feb 27, 2011 | Mitsubishi Montero Sport Cars & Trucks
Nov 27, 2010 | Mitsubishi Lancer Cars & Trucks
Sep 27, 2009 | Nissan 300ZX Cars & Trucks
15 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: