CHECK ENGINE -- P1143 and P1163

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CHECK ENGINE -- P1143 and P1163

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CHECK ENGINE -- P1143 and P1163 - 4/7/2008 7:42:55 PM

XterraRob

Posts: 1
Joined: 4/7/2008
Status: offline

I had P1143 pulled up the other day, called for a replacement of the passenger side O2 sensor pre-cat, wiped the code and it's back with another.

P1143 - Heated Oxygen Sensor 1 Lean Shift Monitoring (Bank 1)
P1163 - Heated Oxygen Sensor 1 Lean Shift Monitoring (Bank 2)

Not sure what to do now... any help would be appreciated.

Might need MAF cleaned?

< Message edited by XterraRob -- 4/7/2008 8:54:19 PM >