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Cant get rid of P0174 code?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TacoMoose, May 31, 2017.

Page 2 of 2
  1. Jan 5, 2018 at 3:04 PM
    #21
    Lazevedo

    #21
    Lazevedo Well-Known Member

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    So the problem was with the o2 wideband sensor or the basic o2 sensor? Nearest or furthest from the block??
     
    Lazevedo, Jan 5, 2018
    #21
  2. Jan 4, 2020 at 7:20 PM
    #22
    SamuelJ

    #22
    SamuelJ Darkhorse

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    33.9269893 -118.0185768
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    2012 DCLB 4x4 Trd Sport
    Shortened flowmaster exhaust with a turn down pipe, under cowl intake, throttle body spacer, train horn, underhood led lights, hood struts, dual 27f yellow tops. Led ditch lights, led front roof light bar, led fogs and headlights, behind grill mounted piaa dual color driving lights. Aux fuse and relay panel. Pro comp skid plate, bilstein 5100 leveling shocks on a 2in. lift, b110 rear 5100, add a leaf, front superbumps, light racing jounce rear bumpstops, sway bar relocation, brake line bracket extension, driveline carrier bearing drop, front diff drop, on board air compressor, 10 gal pump driven fresh water tank, cb radio, pioneer 4200 hu, infinity reference component front and component rear speakers powered by rockford fosgate 4 channel, jl audio 10TW3-D4 sub powered by kx800.1 amplifier. Big three upgrade, capacitor. Full cab sound deadening and thermal insulation. Led interior including added footwell, courtesy, cupholder, center console, and glovebox lighting, rock lights, bed lights, ring gear armor, under bed ammo can storage, pistol safe, body armor sliders, roof rack, hilift, 285/70 17 nitto rodge grapplers on american racing teflon atx, tailgate strut, and tailgate lock, retrofit projector headlights(home built), rgb halos inside turbine shrouds, black out surround, black chrome reflector and shroud, white halo outside shroud, white led drl, rgb behind grill on rf control. Mods followed from a TW thread: Anytime fogs Anytime rear view camera Anytime 400w inverter Alternating blinker/running lights 110v center console outlet ABS kill switch Engine kill switch (magnetic) 12volt bed socket Rear diff breather relocation Led bed lights Cargo net anchors Grid it center console top Grid it sun visor Locking center console Instrument cluster led swap Map lights on with dome Cigarette lighter add (shifter position) Dtrl kill switch Hilux lighted 4wd selector switch. Vios hvac knobs Hood scoop led bar
    Thread revival! My truck threw same code today. I am not suprised that tw saves my hide again. I dont know what I would do if it wasn't for everyone on here besides lose way more money. Checked everything over and found a small hole in one of my vac lines. Changed it out for a new one, cleared the fault and no problems for about 50 miles so far. After seeing the cost of upstream A/F sensors vs. price of vac lines I had to say thank you to everybody on TW.
     
    SamuelJ, Jan 4, 2020
    #22
    CaffeineandGasoline likes this.
  3. Aug 4, 2021 at 1:21 PM
    #23
    TXtacoTruckin

    #23
    TXtacoTruckin New Member

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    running boards, bug guard, SnugTop fiberglass topper
    THREAD REVIVAL #2: My 2015 Tacoma V6 threw both P0174 and P0170 codes. Took over 2 hrs to diagnose at Toyota dealer. Thought it was bad gas. Gas tested ok. Turned out to be fuel pump only putting out 18 psi and should be 45-48 psi so there's the culprit. As of the date of this thread the cost will be just over $1200 with tax to replace because they have to drop the tank and empty it. I should have known better and not filled up after throwing the code. Hopefully someone will learn from my mistake. Currently just over 110K miles and parts don't last forever. However, I had better luck with a Ford Ranger at 185k miles all original parts except normal stuff like pads, shoes, filters, ect. It's hit and miss really. I guess it's time over 100K. Starting to think if I should have bought aftermarket warranty to cover over 100k miles. Too late know.
     
    TXtacoTruckin, Aug 4, 2021
    #23
  4. Aug 26, 2021 at 7:17 PM
    #24
    jtaco11

    #24
    jtaco11 Well-Known Member

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    got p0174 code today.
    learn something new everyday. thought there were 4 o2 sensors when actually 2 on bottom/downstream are 02 and 2 on top are air fuel ratio sensor/upstream (more expensive ones).

    4 yrs ago i got p0157 which was bottom/downsteam fixed by changed it w Denso 234-4261

    I cleaned out my MAF w CRC Mass Air Flow Sensor Cleaner. if doesnt work may replace the sensor since its was swapped from my other toyota. Next step would be change the A/F ratio sensor if no good could be hose leak somewhere or maybe fuel pump since my gas guage stopped at 1/8 (could be related maybe/maybe not)


    CRC 05110 Mass Air Flow Sensor Cleaner
    $13 CRC 05110 Mass Air Flow Sensor Cleaner - 11 Wt Oz.
    https://www.amazon.com/gp/product/B000J19XSA?ie=UTF8&smid=ATVPDKIKX0DER

    Denso 234-9051 Air Fuel Ratio Sensor (top/upstream) denso site also list Denso 234-9026
    $124 Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor
    https://www.amazon.com/Denso-234-90...982f1cc625b&pd_rd_wg=8yl97&pd_rd_i=B0018JUJ9O

    Denso 234-4260 Oxygen Sensor (downstream Right)
    $47 Denso 234-4260 Oxygen Sensor
    https://www.amazon.com/Denso-234-42...360958e0cf9&pd_rd_wg=e5X8Y&pd_rd_i=B00199FBQY

    Denso 234-4261 Oxygen Sensor (downstream Left/diff part# but i think its just cable lenght)
    $45 Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front
    https://www.amazon.com/Denso-234-42...83f18bac3cc&pd_rd_wg=Q68WU&pd_rd_i=B0016NBBQW
     
    Last edited: Aug 26, 2021
    jtaco11, Aug 26, 2021
    #24
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