02 heater circuit bank # 1 sensor 3

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howso48
I am smitten with my van
Posts: 38
Joined: Sun Dec 04, 2011 9:50 am
Location: S/W Mo.

02 heater circuit bank # 1 sensor 3

Post by howso48 »

02 heater circuit bank # 1 sensor 3 , 02 heater circuit bank # 1 sensor 3, is there any chance these could be faulty wiring, lose or corroded connection #-o :withstupid: , and also any help 8-[ as to where this sensor # 3 bank # 1 is as to location in the :rolleyes: system ??
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v8famvan
I sleep in my van
Posts: 276
Joined: Sat Sep 09, 2006 10:42 pm
Location: British Columbia

Re: 02 heater circuit bank # 1 sensor 3

Post by v8famvan »

Bank 1 sensor 3 is the O2 sensor after the catalytic converter.
This code is usually caused by a defective heater in the O2 sensor. To check the wiring, check for power on the pink wire & ground on the black wire. If they are ok, the problem will be the heater in the O2 sensor.
Replace, clear codes & drive.
James from B.C.
1992 Safari - R.I.P.
GM Grand Master Techncian
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