How many o2 sensors does the truck have and how do I know which onr to replace

Asked by Dec 01, 2013 at 09:02 PM about the 2004 Toyota Tacoma 4 Dr Prerunner Crew Cab SB

Question type: Maintenance & Repair

2 Answers

apparently you've two heated 02 sensors on the exhaust one on the head pipe and one after the catalytic converter~ you can get your trouble codes with a handheld scanner or have an autoparts store connect to your OBD-II port~

3 of 3 people found this helpful.

The book says 4 2 up stream 2 down stream ( left and right sides ) ) but actually the up stream ( right side looking at the front of truck) is a air - fuel mixture sensor that costs about 300.00 dollars so the answer is 3 total both down stream and one up stream left as u look AT the truck !

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