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Re: O2 senser heater malfuntion Bank #1
The code number will indicate if it a upstream sensor (before cat) or downstream sensor (after cat). Go to the Online FSM it has testing procedure that are code specific in the EC Section, before you replace the sensor.
I forgot to mention that Number 1 bank is always side that the number 1 Clyinder is on, in this case closest to firewall.
Closest to firewall clyinders are 1,3,5
radiator side are 2,4,6
Last edited by tempfixit; 04-19-2009 at 12:48 AM.
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