Limp mode

Tiny
PVTNALL78
  • MEMBER
  • 2002 MITSUBISHI MONTERO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
This is the codes it gave us : 0431, 0174, 0154, 0421, 0171, 0134, 0341 it also said most were pd (pending) codes for most of them
Tuesday, August 9th, 2011 AT 5:15 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
0134 - Right front HO2S circuit no activity detected ( Bank 1 Sensor 1)
0154 - Left front HO2S circuit no activity detected ( Bank 2 Sensor 1)
0171 - Right bank too lean (Bank 1)
0174 - Left bank too lean (Bank 2)
0341 - Not found in list, can you reconfirm?
0421 - Right warm up catalyst efficiency below threshold (Bank 1)
0431 - Left warm up catalyst efficiency below threshold (Bank 2)

Problem seems to be from the HO2S circuit. Check for battery voltage to the sensors with ignition switch turned on.
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Tuesday, August 9th, 2011 AT 11:33 AM

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