p0172 - ClubLexus - Lexus Forum Discussion - Threads Tagged with p0172

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Threads Tagged with p0172

Threads Tagged with p0172

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p0172

2 Attachment(s)

Dissecting Freeze Frame - P0172 - Fault 02/CAT/MAF?

george42 on Mar 4, 2026

Apr 28, 2026 08:42 PM
by george42

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1

231

IS - 2nd Gen (2006-2013)

2009, 250, 450h, 470, code, diagnoising, fuel, gx, lexus, long, luxus, p0172, p0172p0175, p0175, rx, term, trim

Pull codes P0172/P0175, need help diagnoising

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Multi-page thread

1 2 3)

edgeucated on Jul 6, 2013

Oct 15, 2025 06:58 AM
by misschris

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33

125,474

IS - 2nd Gen (2006-2013)

is350, p0172, p0175

IS350 Codes P0172 P0175 P1170

Hubb23 on Jan 26, 2021

Nov 5, 2023 11:54 AM
by Juiching

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14

6,762

IS - 2nd Gen (2006-2013)

hestiation, is250, p0172, p0175, p0306

IS250 Problems

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Multi-page thread

1 2)

Pivin on Jul 14, 2021

Jul 16, 2021 10:26 PM
by Pivin

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15

9,491

IS - 2nd Gen (2006-2013)

Post

fuel, is250, lexus, p0172, trim

-25% Long Fuel Trim 2008 IS250

hardy272 on Jun 10, 2021

Jun 13, 2021 08:36 AM
by eicca

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5

5,256

IS - 2nd Gen (2006-2013)

idle, oxygen sensor, p0172, rich, rx400h

RX400H - P0172 & P0175 - System Too Rich

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Multi-page thread

1 2)

GrantOli on Mar 3, 2021

Mar 10, 2021 08:30 AM
by matts6887

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16

7,590

RX - 2nd Gen (2004-2009)

p0172, p0175

System too rich ( Bank 1 & Bank 2 )

BabanMT on Aug 26, 2017

Jan 22, 2020 09:45 AM
by Sean350nyc

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10

28,770

IS - 2nd Gen (2006-2013)

330ci, blazer, bmw, catera, control, foam, idle, knock, lexus, p0172, p0300, p0401, p0505, plugs, repair, sea, seafoam, sensor, spark, system

Bought a can of Seafoam.

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Multi-page thread

1 2 3 4)

Rock-a-Lex on Jul 10, 2008

Feb 28, 2018 04:35 PM
by MikeFig82

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53

48,350

GS - 2nd Gen (1998-2005)

0305, 430, 99, 99es300, engine, es300, es330, es350, light, ls, message, p0172, p0300p0304, p0301, p0305, p1305

1999 p0301, p0302, p0303, p0305, p1305, p0172, p0420, p0300

crwys on Nov 18, 2013

Nov 25, 2013 02:30 AM
by moonphase

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5

6,298

ES - 1st to 6th Gen (1990-2018)

Exclamation

1998, 400, catalytic, converter, fix, fuel, gs, gs400, hold, lexus, line, p0172, rich, runs, turbo, vacuum

1 Attachment(s)

1998 Lexus GS400 - P0172 - Runs Rich

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Multi-page thread

1 2 3 4 5)

ThomasGS4 on Jun 19, 2013

Jul 24, 2013 05:01 PM
by GS4_Fiend

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74

25,929

code, lexus, p0172

p0172 and p0175

gldcrzy on Mar 28, 2013

Apr 6, 2013 10:55 AM
by gldcrzy

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2

3,135

IS - 2nd Gen (2006-2013)

460, code, is350, lexus, ls, p0172, po172

2IS code P0172

MyIS350G on Dec 27, 2012

Jan 2, 2013 11:38 AM
by rookieIS

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9

2,078

IS - 2nd Gen (2006-2013)

2002, airfuel, code, diagnostic, dtc, engine, es300, lexus, light, malfunction, p0171, p0172, po171, procedure, ratio, rich

Autozone code PO171, O2 or Air Fuel Sensor

perduefred on Jan 10, 2008

May 2, 2011 03:32 PM
by AutoWorks

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9

9,948

ES - 1st to 6th Gen (1990-2018)

167000, 1999, 300, 99, bank, chugging, coil, hooked, issues, lexus, miles, p0172, problems, rich, rx, rx300

99 RX 300 issues

tdandkd on Dec 11, 2010

Jan 2, 2011 02:48 PM
by sktn77a

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12

5,440

RX - 1st Gen (1999-2003)

300, bank, cleaner, es300, explained, fuel, lexus, p0171, p0172, p0174, pump, rx, rx300, short, term, trim

2 Attachment(s)

Fuel trims--Diagnosing P0171, P0174, P0172, P0175

Nad1370 on Apr 27, 2010

Apr 28, 2010 04:38 PM
by Nad1370

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4

29,346

RX - 1st Gen (1999-2003)

Unhappy

01, am1, box, fuse, is300, lexus, p0172, troubleshoot

Help asked!

lexsyl20 on Jan 22, 2009

Feb 22, 2009 10:30 PM
by IS3_FTW

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14

1,227

IS - 1st Gen (2001-2005)

07, 2006, 350, cel, code, es, is250, is350, lexus, p0101, p0171, p0172, p0174, p0175, po101, traction

The dealer tells me its my Intake.

Drelicious on Feb 16, 2007

Feb 17, 2007 09:35 AM
by bygtimaish

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13

4,412

IS - 2nd Gen (2006-2013)

Unhappy

1999, 30, 300, altitude, clublexus, ecm, high, lexus, p0171, p0172, problem, properly, rich, rx, shifting, system, trans

1 Attachment(s)

Ecm Or Engine & Tranny Problems?

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Multi-page thread

1 2)

RHON1982 on May 11, 2006

Jul 17, 2006 11:57 AM
by RHON1982

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16

2,794

RX - 1st Gen (1999-2003)

98, cars, check, code, engine, fuel, is350, lexus, light, malfunction, p0172, po172, pressure, rich, sensor, system

Check engine light Code P0172

Ditto on Jun 13, 2004

Jun 24, 2004 07:42 AM
by Ditto

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7

27,892

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