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o2 sensor

  1. O2 sensor issues

    1Gen-Tundra
    '05 Tundra 4.7L threw code P0156. I replaced the Bank 2 Sensor 2 with a new Denso and did a reset. Code threw again. Is there a chance that the new sensor was faulty? The voltage tends to stay high (.8-.9)on that sensor while in operation. I say tends because it does not fluctuate as much...
  2. NEWBIE - Another P0430 thread : '06 Sequoia

    1Gen-Sequoia
    Hi Guys, Newbie poster here but I am frustrated and not sure what to do next. So I am original purchaser of a '06 Sequoia. 144K miles now and no issues BUT about 3 years ago, I started getting a CEL. It was the P0430 error code. It was very sporadic and I finally narrowed it down to a couple...
  3. How to Replace O2 Sensors on a V6 Toyota Tundra 2002 (2000-2006) P1135/P0135

    Intake and Exhaust
    Instructions on How to Replace O2 Sensors on a V6 Toyota Tundra 2002 (2000-'06)P1135 So after a lot of internet trolling, I finally replaced my front O2 Sensor (A/F Sensor : Bank 1, Sensor 1 : P1135/P0135) this weekend!!! It has been bad for over 4.5 years. When it first went out, I had the...
  4. O2 Sensor replacement 04 Tundra

    Intake and Exhaust
    Ok, so I have a check engine light. Got it checked out, turns out it was the O2 Sensor, Bank 1 sensor 2. The one just before the exhaust. I replaced the sensor (pain in the butt 04 Tundra), had the error cleared and the next day the light came back on. Thoughts
  5. P2241 OBD2 Code

    1Gen-Sequoia
    Does anyone know for sure what a P2241 code is on an 05 Sequoia? The CE light came on the other day and when I checked it, it came back with this code. My book didn't have the code listed, and searching on the net didn't come back with anything specific to the Sequoia. I did find other Toyota...
  6. 04 Tundra P0430 after Cat replaced

    1Gen-Tundra
    Hey guys, heres what I have: 2004 Tundra 4.7L SRS 144k I recently checked my records on the Toyota website and found that at 124k (2009) i brought the truck to the dealer with a P0430 code. They replaced Bank2 o2 sensors 1&2 and also Bank 2 Cat. cost me a ton of cash but this was my daily...
  7. Engine Trouble Code help

    1Gen-Tundra
    Hi, I am new to the forum. I have a 2004 Tundra Double Cab with the 4.7 V8. A year ago, the trouble code for the front O2 sensors came on and these were replaced. More recently, I am getting a P0430, which is, as I understand it, the passenger side Catalytic Converter system efficiency. My...
  8. P0420 P0430 Codes Are Back

    Highlander
    I posted last June at 186,000 miles: My ’03 4 cylinder Highlander has been throwing intermittent P0420/P0430 codes for over two years. The CEL came on last August and stayed on for good. I ignored it for nearly a year after speaking with a Toyota mechanic who said that it could be the O2...
  9. O2 Sensor Problem

    1Gen-Tundra
    I have a 2003 tundra with an O2 sensor problem. The old O2 sensor was coming up with an error code “heater circuit low” P0031. When I replaced it the truck generated a new error code Sensor Circuit Low Voltage. The new error code on come on after a few days. I have checked for vacuum leaks and...
  10. O2 sensor Problems.. 2000 tundra

    Tundra
    I have a 2000 Tundra 2dr. with the 3.4L motor, Auto trans... Somebody cut off my cattlytic converter and decided to cut my wire harness for 02 sensor also.. I welded a new cat on and got a new o2 from the parts store. none of my local parts stores or junk yards had the pigtail for my sensor so i...
  11. Replaced all 4 o2 sensors, CEL still on

    Electrical & Computer Systems
    I have replaced all 4 O2 sensors and the CEL is still on. The code reads bank 1 sensor 2. I know which one that is, but don't know what is wrong with it. Please Advice
  12. 99 Cam, v6, rich front/rough idle, shift

    Camry
    '99 Camry, v6, ~120k mi, College student (ie frugal :cool:, mostly bikes around now) First symptoms: Pulsating (lightly slipping clutch feel) at certain in 4th gear when low rpm. Current: Same pulsating whenever at certain throttle point (park/neutral or any gear). Startup is bogged, then...
  13. Another Oxygen Sensor Question (Heater Circuit)

    1Gen-Tundra
    My '01 Tundra's check engine light (CEL) came on a few weeks ago. I tested the OBDII at Autozone and the oxygen sensor was bad as I suspected. I purchased a universal sensor because I am cheap and I have the "I think I can fix anything" complex. I replaced it, reset the ECU by pulling the...
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