Where is Bank 1, the firewall side or the radiatior side on a 3.0 liter V6 Highlander

jowlett
115

Asked by jowlett Oct 31, 2007 at 10:42 PM about the 2003 Toyota Highlander Base V6 4WD

Question type: Maintenance & Repair

4 Answers

littlehorn
31,195

Bank 1 for what sensor/system?

jowlett
115

Bank 1 sensor 1 P0-135 oxygen sensor - O2 heater sensor ciruit does not work. Where is the sensor located?

9 out of 9 people think this is helpful.
littlehorn
31,195

I believe it is the radiator side, however, you may also need to look at the ones down near the catalytic convertor. Unplug each one individually and see if any new codes appear.

2 out of 2 people think this is helpful.
ozmedia
0

Bank 1 is the rear engine bank. uncsrewing any sensor will throw a code. Could also be dirty MAF or air filter, test the sensor with a proper scanner to confirm operation and check mass air flow to confirm.

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