Check Engine Light Due to Failed Oxygen Sensor on Toyota Tundra

Problem Description and Possible Solution

One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

Problem Data
RepairPal Verified
Average mileage: 116,426 (13,688–226,025)
9 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006, 2007, 2008
107 people reported this problem
Viewing 1 - 20 of 38 comments
Check engine light came on...took to AutoZone to scan bad O2 (oxygen) sensor...ignored due to truck still running fine...checked again, periodically, and now 3 years later - all O2 sensors bad...but still runs! Can this lead to other problems?
Engine light came on, had it checked at auto zone, reading of circuit low 02 sensor bank 1 sensor1. Truck is jerking when excelerating, is this caused by the sensor problem?
Check engine lite came on.. Replaced gas cap.. Lite turned off by tech
150 miles later lites on but could not do nys inspection module not reading.
Truck drove by tech,,o 2 sensor replaced. Still not clearing module. Truck running fine.
What is Toyota tundra reset routine? I found a generic method on dmv web site. Any thing special for my
2001 truck 63000 miles V8? Not fixed...
Toyota dealer used there scanner. Says bank 2 sensor 2 is bad. Had it replaced with genuine toyota part and 15 miles later check engine light is back on.
Check engine light on, took to mechanic, $800 to replace O2 sensor, no power before replacement. Ran fine for about 3 weeks, then light on again and same issues. Want to fix problem myself if possible. Can't afford another bill like that for same issues.
Engine light came on...code was for bank 1 ,#2 sensor....told at parts store that's the one before the cat.converter...180.00 later.....replaced that same sensor one year ago ???? Bosche makes them,NGK, there a preferred?or are they all made in China....? also heard fuel injector cleaner effects their longjevity.
Check Engine light has been on for 20,000 miles. My father have me this truck at 96,000 miles. Currently this truck has a little more than 102,000 miles. I finally had a parts guy at ORielly's hook up the scanner tool. He told me it was an O2 sensor. I was very leery about this guys skills with the scanning tool. He was young and it was very apparent, not the sharpest knife in the drawer. After purchasing the new O2 sensor and returning home, I went under the truck to have a look and see what all was going to be entailed for this, simplistic I thought at the time, project. After a quick survey, I discovered four O2 sensors. Heck, there could be more. The four I found were at a quick glance. So my question is: Does the faulty O2 sensor give a location on the Scan tool?
Check engine light came on and had it diagnosed for the O2 sensor. Coincidently, my previous truck was a T-100 with same drive train. When that O2 sensor went out at 121000 miles, the service advisor let it slip that the computer is set to trigger an O2 sensor replacement at or near 120000 miles. How coincidental is it that nearly every complaint listed here (self included) has a problem at the 120000~ mile range..... Currently have 226k miles on my tundra and am patiently awaiting the check engine light to come on again.... maybe the consimer guru recently appointed should get Toyota to refund this 'rigged' repair... or remove the computer trigger or, reduice the repair cost if this is truely a time change component!
check engine light came on but the truck runs great .. took to auto zone and they told me the oxygen sensor is bad
had both top oxygen sensors go out replaced them myself for about $60. ea. & saved a bundle over the dealer service dept. You will need a special socket for the sensor (my neighbor had one) Not very difficult if I can do it. You of course need to know which ones are out ! Most parts stores will scope it for you. Good luck
dealership stated that engine light was on because two oxygen sensors had failed. I have not repaired yet but the estimate for repair was $650.
My fiance, she ran a diagnostic on it when check engine light came on. Code PO138 came up. O2 sensor circuit High volts (Bank 1 Sensor 2).
1st sensor triggered the light. I took it to Oreileys auto parts for a free code reed. I bought the parts & changed it my self. 6 months larter O2 number two went out. Same scenario. Changed it myself. Tip. Must use PB Blaster first, then drive truck for 15-20 minutes. Wait till engine just cools down to not burn your hands.
Had one sensor on left front bank go out but I was smart I bought all four. Sure enough after I replaced it the rear sensor on second bank went out not that long after so being that I had all of them I replaced every one and now been ok. Next time one goes out I'll end up buying all four again save yourself the trouble