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


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

Question type: Maintenance & Repair

4 Answers


Bank 1 for what sensor/system?


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

10 out of 10 people think this is helpful.

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.

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.

Your Answer

Add photo

Related Questions

Looking for a Used Highlander in your area?
CarGurus has 16,403 nationwide Highlander listings starting at $3,698.

Search Toyota Highlander Questions

Toyota Highlander Experts

#1 Shawntele Lewis
Shawntele Lewis
Reputation 2,140
#2 Tom Demyan
Tom Demyan
Reputation 2,120
#3 Wendy Tucker
Wendy Tucker
Reputation 1,360
View All

Related Models For Sale

Used Honda Pilot"
287 Great Deals out of 13,323 listings starting at $2,772
Used Toyota 4Runner"
277 Great Deals out of 11,235 listings starting at $1,995
Used Toyota RAV4"
689 Great Deals out of 38,300 listings starting at $2,000
Used Acura MDX"
239 Great Deals out of 14,018 listings starting at $1,995
Used Nissan Pathfinder"
278 Great Deals out of 18,143 listings starting at $2,000
Used Toyota Camry"
1,246 Great Deals out of 78,098 listings starting at $1,450
Used Honda CR-V"
649 Great Deals out of 52,886 listings starting at $900
Used Toyota Sienna"
285 Great Deals out of 21,226 listings starting at $1,999
Used Ford Explorer"
911 Great Deals out of 41,979 listings starting at $950
Used Toyota Sequoia"
134 Great Deals out of 3,713 listings starting at $3,200
Used Hyundai Santa Fe"
401 Great Deals out of 23,678 listings starting at $1,500
Used Jeep Grand Cherokee"
1,078 Great Deals out of 62,970 listings starting at $500

Used Cars For Sale

2015 Toyota Highlander For Sale
15 Great Deals out of 6,800 listings starting at $27,865
2014 Toyota Highlander For Sale
27 Great Deals out of 549 listings starting at $23,488
2013 Toyota Highlander For Sale
108 Great Deals out of 2,051 listings starting at $18,958
2012 Toyota Highlander For Sale
76 Great Deals out of 1,810 listings starting at $16,000