Question about 2005 Cadillac STS

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2006 sts engine codes p0174 and p1101

Car has engine codes p0174 and p1101 no real difference in running notice slight baug when engine is throttled need to know most likely cause engine code is very broad spectrum of issues

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Try taking some throttle plate cleaner and while the car is cold spray it around behind the throttle body. on a lot of Cadillac's their is a rubber boot between the throttle body and the upper intake and it splits and can give you a lean condition. it is air unacounted by the mass air flow sensor. or if you have a fuel filter. may be clogged.

Posted on Jan 13, 2015


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Posted on Jan 02, 2017

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SOURCE: I have a 94 cadillac seville sts, end I have a

First thing you have to do is list all the codes, because some some might be stored for a long time. Pushing the OFF and WARM buttons together and holding will ghive you all the stored codes. Then press OFF and HI together to clear all codes. Hold and wait for bars or 0's. Now start your car and let it get up to proper operating temps. Take car for aride that aincludes all phases of driving including highway speeds. Observe SERVICE ENGINE LIGHT for coming on . Assuming it does , repeat steps previously provided, read codes stored and repair accordingly. If need be contact me with new codes and I will try to assist you.

Posted on Mar 16, 2009

SOURCE: i have a couple codes P0335,P0385,P0171,P0174. My

Resolve trouble codes and try again, if car runs ok no problem if not, write again.

Posted on Jul 16, 2009

  • 7 Answers

SOURCE: Cadillac Deville 2000- Engine check light code P0741

If you like go ahead and let someone sell and replace your transmission but here is my suggestion! Check around and see if you can find a minor vacuum leak! This can simply be the big round hose that goes from the fuel injection to the power brake hub! This is normally a push in connector which has about a 1/2 inch hose clamped on it! If there is any kink or the connector is not in correctly a leak will occur and the transmission will shift rough as though you will be thrown out of the vehicle! Try unplugging this connector and plug it back in hard and straight and maybe you will be lucky and fix your problem. If the vacuum is correct your transmission will shift better than you have ever experienced!

Posted on Aug 16, 2009

  • 332 Answers

SOURCE: what would cause the engine light to come on in my

bad oil pressure or oxygen sensor or bad fuel mixture sensor or even a failing fuel injector. I sure wish they wouldnt put dummy lights in vehicles but instead there should be gauges because if it is oil pressure theres probably damage to motor because those dummy lights come on when its pretty much to late to stop damage..

Posted on Feb 22, 2010

  • 2309 Answers

SOURCE: 2002 Cadillac Deville 4.6 L engine is surging at

i have a feeling the problem is not the sensors, they are reading lean indicates that air is getting into the engine around monitored system, basically a vacuum leak, which causes surging, also get a real time engine monitor not just a code scanner, some even have snapshot capabilities that will freeze the readings when something abnormal happens, just don't go replacing parts without knowing why

Posted on May 04, 2010

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My daughter has a 2006 sonata v6 it threw 8 codes p0171-p0174 and p2187-p2190. it was starting by spraying starting fluid I changed the fuel pump, evap purgevalve,plugs,mafsensor,crank sensor,

Yea , what's your question ? Doesn't start an run , only when you spray starting fluid into the engine ? You do or don't know what lean codes are ? Did you check the electrical circuit for fuel pump . Amperage draw test etc.... Check fuel pump relay ! Videos on youtube testing fuel pump electrical circuit . Did you change fuel filter ?

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code po444 is referencing a purge control problem. this could be a bad connection or a problem with the purge solenoid for the evaporative system(EVAP). this is controlled by the PCM to allow fuel vapours to be drawn into the engine and burnt from the gas tank under certain conditions. the p0174 is a lean running condition on bank 2 and p0171 is a lean running condition on bank 1. the lean running conditions could be O2 sensors, lean condition caused by bad fuel pressure, dirty injectors, bad MAF sensor, vacuum leak.

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Codes- P0171, P0174, P2106, P0351, P0355 and P061C the car is a 2006 ford five hundred. The car runs good at times. any suggestions?

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May be your car run normally now, but you must check and repair the fault in advance.
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I have a 2006 F-150 v-6 2wd with a check engine light that just came on. Found out that the code is P0174. Can you help me figure out how to diagnose a sytem too lean issue?

P0174 is a dirty air-flow (MAR) sensor. It is located in the inlet air tube near the throttle body. Just clean or replace the sensor. If you want to clean it first, use only electronic cleaner as any other cleaner may damage the sensor. Disconnect the air inlet tube in front of sensor and spray the sensor with electronic cleaner through the screen at the wire element in the center of the sensor. Let it sit a while and spray again. Re-connect the air inlet tube and start engine. If P0174 appears again, you need to replace the sensor.

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I got codes, p0172 and p0174 (mustang gt 4.6L)

When these codes are tried together it usually means O2 sensors are going bad. I suggest you get a real scanner on it before you spend $$$$$

Jun 22, 2009 | 2006 Ford Mustang

1 Answer

Engine knocks on 06 STS w/27,000 miles

Have a scan tool put on it and see what codes come up. It sounds like a knock sensor to me, but lets get that free scan at autozone, or Pep boys & see what it says.

May 01, 2009 | 2006 Cadillac STS

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