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William B Posted on Apr 20, 2014

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

1 Answer

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  • Contributor 44 Answers
  • Posted on Jan 13, 2015
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Joined: Sep 09, 2014
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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.

5 Related Answers

Anonymous

  • 607 Answers
  • Posted on Mar 16, 2009

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.

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Anonymous

  • 322 Answers
  • Posted on Jul 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.

Anonymous

  • 7 Answers
  • Posted on Aug 16, 2009

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!

Anonymous

  • 332 Answers
  • Posted on Feb 22, 2010

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..

Anonymous

  • 2309 Answers
  • Posted on May 04, 2010

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

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1answer

2005 Cadillac STS V8 - P0420/P0300/P0174

There are two easy tests for the catalytic converters. One, use a infrared pyrometer and measure the temperature of both catalytic converters and compair the readings. There should not be much difference between the two if both are flowing correctly. Another easy test is to drill a 1/4" hole before each cat and check for excessive back pressure.
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06 Cadillac STS V8 car has codes P0174 and P0420.

• DTC P0171 Fuel Trim System Lean Bank 1
• DTC P0174 Fuel Trim System Lean Bank 2
.
The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without oxygen sensor (O2S) input. During Closed Loop, the O2S inputs are added and used by the ECM to calculate short and long term fuel trim (FT) fuel delivery adjustments. If the O2S indicates a lean condition, FT values will be above 0 percent. If the O2S indicate a rich condition, FT values will be below 0 percent. Short term FT values change rapidly in response to the heated oxygen sensor (HO2S) voltage signals. Long term FT makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1. If the ECM detects an excessively lean condition, DTC P0171 or P0174 sets.
Diagnostic Aids
• Excessive resistance in the fuel injector ignition 1 voltage circuit or the fuel injector control circuit may cause the following symptoms:
- Lean condition
- Misfire
- Rough idle
• The system will go lean if an injector is not suppling enough fuel.
• A lean condition could be present during high fuel demand.
• A malfunctioning MAF sensor can cause this DTC to set. Refer to DTC P0101 .
• Review the Failure Records with a scan. If an intermittent condition is suspected, refer to Intermittent Conditions .

DTC Descriptors
This diagnostic procedure supports the following DTCs:
• DTC P0420 Catalyst System Low Efficiency Bank 1
• DTC P0430 Catalyst System Low Efficiency Bank 2

This code could mean the catalytic converter on that bank has failed .

Causes of lean condition trouble codes P0171 P0174 GM 5 3L

P0420 P0430 catalytic converter catalyst inefficiency code diagnosis

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P0444

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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2006 sts v8

O2 sensor has detected a lean condition vacuum leak
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How to replace throttle control sensor on 2006 cadillac sts

should be on side of actual throttle body attached to throttle shaft with two retaining screws either torx head,or possibly phillips head screw.unplug sensor and remove screws.install in reverse order.
0helpful
1answer

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

P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)
P2106 Throttle Actuator Control System - Forced Limited Power
P0355 Ignition Coil "F" Primary/Secondary Circuit
May be your car run normally now, but you must check and repair the fault in advance.
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MaxiDiag Elite MD802
1helpful
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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.
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