Question about 2004 Chrysler Crossfire

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I have engine codes 171 and 174 engine is running fine how do i repair thease codes

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Check vacuum lines. Codes are for O2 sensors. bank one and two running lean. Make sure the air plenum is tight to the throttle body.

Posted on Apr 12, 2015

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Posted on Jan 02, 2017

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On my 2002 yukon 1500 I have trouble codes of 171,174, 420 what is my problem


Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.
Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.
You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
I hope this helps.

Mar 31, 2012 | GMC Yukon XL Cars & Trucks

1 Answer

Keep getting ses codes p507 p171 p174


The codes you show are all about air leaks. The 507 is about the IAC and may simply be the system noting the connection was unplugged.

The 171,174 are lean codes and usually mean more air is coming in than is needed. Did you use a water mist to check for leaks? Have you checked Vacuum solenoids for leaks?, the EGR diaphram?

You did not indicate the engine and vehicle this problem was on. Some of the 6 cylinder products had sandwich type manifolds and the upper and lower chambers had a gasket which would dissolve and leak internally.

Some people have had problems with the runners on dual plane manifolds, but I question whether a 171, or 174 could generate from this defect.

I think you should retest with a water spray after clearing the computer.

Jan 24, 2012 | Cars & Trucks

1 Answer

97 Plymouth Grand Voyager 3.3 engine. The transmision just started slipping. The fluid level is fine and there are no leaks. There are no check engine lights on. Was running perfectly. What is the problem?


I have replaced alot of transmissions in thease vans, i would try changing the filter and fluid, if that doesn't help you may be looking at replacing the tranny.

Oct 23, 2010 | 1997 Plymouth Grand Voyager

1 Answer

1998 avenger crank no start!


I don't have experience with the avenger itself, but i've been wrenching on cars for longer then i care to admit and age myself... LOL.... but from what your describing i would almost suspect a ECU problem, but that doesn't make sense since you have injector pulses and spark. If you have fuel, air, and spark... The only thing i could suggest is recheck all electrical connections and possibly do a compression test to rule out anything that might have failed with the relearn test drive. A quick google search through some dodge forums didn't really turn up any common avenger issues, sounds like a hair pulling problem!

May 04, 2017 | 1998 Dodge Avenger

1 Answer

Where do I find Emission control systemin in engine compartment


unless u have delt with thease problems before u will have to take it to the shop to have it smoked but the first thing i would do is replace the gas cap

Oct 19, 2009 | 2002 Dodge Neon

1 Answer

Check engine light is on,codes 171,174,system lean,codes came back as 2 oxygen sensor's before cat/conv,do they need to be replaced or could it be something else causing it, any help would be great!!!


O2 SENSORS ARE BAD MOST LIKELY I WOULD CHANGE THEM DISCONNECT THE BATTERY FOR 5 MIN. ( IF YOU DONT HAVE A SCANNER) THIS WILL RESET YOUR COMPUTER AND SHOULD MAKE THE SERVICE ENGINE LIGHT GO OUT.

May 19, 2009 | 1999 Ford Ranger SuperCab

2 Answers

Dose anyone no wat thease codes codes meen as my car wont start but turning the key on an of a few times it brings up thease codes p1130 and p1685


P1130 - HO2S Circuit Low Variance Bank 1 Sensor 1

P1685 - Skim Invalid Key - The engine controller has received an invalid key from the SKIM.

CLICK HERE for a full list of OBD Codes for the PT Cruiser.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Mar 05, 2009 | 2004 Chrysler PT Cruiser

1 Answer

1995 Imprezza trouble codes


I would not recommend just resetting the light unless you have corrected the reason it was on…..Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. The list of possible codes number in the hundreds. The code itself doesn't tell exactly what component is defective - it only indicates where to look, or what engine parameter is out of normal range. You or a technician will have to perform further testing to pinpoint cause and the proper repair. Even if you reset the light, if the underlying problem is not addressed it will come back on. I have seen the computer make the fan run all the time when it sees a problem with the coolant temp sensor.

Dec 12, 2008 | 2005 Subaru Legacy

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