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CODEC P1173 MANUFACTURER CONTROL FUEL AIR METERING

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Check Engine Light On Volvo S80 2000

The P1132 I believe is a bad mass flow sensor or a vaccum leak

Posted on Dec 16, 2008

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chuck943
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SOURCE: code p1131 on a 1999 mercury cougar

Lack of HO2S-11 Switch, Indicates Lean.Right bank front 02 sensor. When an HO2S sensor indicates lean at the end of a test, the system is trying to correct for an over-lean condition. The code is set when the fuel control system no longer detects switching for a calibrated amount of time.In other words the 02 sensor is indicating lean and the fuel trim has reached the programed limit trying to correct it.
There are many things that could cause this like a bad 02 sensor,a vacuum leak,a leaking or contaminated fuel injector/s,a stuck open PCV valve,leak in hose between MAF sensor and engine causing un-metered or unmeasured air entering the engine,exhaust leak,improperly seated oil dipstick,stuck EGR valve.
Check PCV valve first if it is stuck open if you pull the hose off of the valve cover that hooks to the air tube between MAF and engine you will feel a strong vacuum pull there,normal you would hardly feel it.

Posted on Mar 11, 2009

  • 1 Answer

SOURCE: what does computer code p1131 manufacturing control fuel air metering mean

Code p1131 manufacturer control fuel air metering, on a 2003 Ford Taurus. Where is part? Is there an easy way to see if it can be fixed without buying the expensive part?

Posted on Sep 01, 2009

Molson02536
  • 3854 Answers

SOURCE: P1131 code Fuel Acturer control - Fuel air metering

In almost every Ford Product from 1990 to 1999 the most likely cause is the Mass Air Flow (MAF) Sensor.

Auto manufacturers have a cleaning cycle built into the MAF circuit. How it works is this; when the key is turned off a larger current is sent through this hot wire causing it to glow red hot, thus burning off any contaminants. Well, almost all auto manufacturers that is.
MAF sensors can get contaminated from a variety of sources: dirt, oil, silicon, spider webs, potting compound from the sensor itself, etc. When a MAF sensor gets contaminated, it skews the transfer function such that the sensor over-estimates air flow at idle (causes the fuel system to go rich) and under-estimates air flow at high air flows (causes fuel system to go lean). This means Long Term Fuel Trims will learn lean (negative) corrections at idle and learn rich (positive) corrections at higher air flows.
To confirm this disconnect the MAF sensor connector. This puts the vehicle into Failure Mode and Effects Management (FMEM). In FMEM mode, airflow is inferred by using rpm and throttle position instead of reading the MAF sensor. (In addition, the BARO value is reset to a base/unlearned value.) If the lean driveability symptoms go away, the MAF sensor is probably contaminated and should be replaced. If the lean driveability symptoms do not go away the MAF sensor is probably not contaminated.
When this happens Ford says you must replace the MAF since they cannot be repaired. With a dealer cost of about $177.00 and about 1.5 hours of labor the repair is not very expensive. However Ford is not correct. This problem can be fixed and it can be done by just about anyone.
What you need to do is go to the local Radio Shack and get a can of spray tuner cleaner, #64-4315. Or a MAF cleaner at any Auto Parts store. Disconnect the NEGATIVE battery cable and remove the MAF from the vehicle. Spray the inside of the MAF with the tuner cleaner. Be very careful when you spray the hot wire. It is very thin and if it breaks, you will have to replace the MAF. Clean it well and let it air dry for 15 or 20 minutes.
Don't use carburetor or brake cleaner. They leave a residue and you will be right back where you started. Use ONLY the tuner cleaner, MAF cleaner which dries residue free. When it's dry put it back in the vehicle and reconnect the NEGATIVE battery cable. You will need to drive the vehicle several miles to let the PCM "relearn" your specific driving conditions. Once that is done the codes will not come back and you should notice all the symptoms are gone as well.
Good luck and keep me posted, be glad to help you get your car running 100% soon. 

Posted on Sep 02, 2009

Wolfman304
  • 720 Answers

SOURCE: P1131 manufacturer control fuel air metering. What

Hi Galant5Rov,

Firstly, congratulations to you on identifying the Trouble Code. This code relates to the Heated Oxygen Sensor (H02s)

The oxygen sensors supply the computer with a signal that indicates a rich or lean condition during engine operation (i.e. fuel/air metering).

This input information assists the computer in determining the proper air/fuel ratio. A low voltage signal from one or more sensors indicates too much oxygen in the exhaust (lean condition) and, conversely, a high voltage signal indicates too little oxygen in the exhaust (rich condition).

The oxygen sensors are threaded into the exhaust manifold and/or exhaust pipes on all vehicles.

A faulty oxygen sensor due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit can cause the following symptoms.
Related Symptoms

  • Surging at idle
  • Unstable idle
  • Running rough off idle
  • Hesitation
  • Stumble
  • Chuggle
  • Poor fuel economy
  • Spark knock
  • Stalling on acceleration
You must take EXTREME care when removing these sensors, as they can be difficult to remove (seize up). You may require a special tool to remove these without causing damage to the sensor.

Cheers,


"If this has helped you in any way, please rate this solution" :-)



Posted on Jan 27, 2010

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The computer says that it has a code p1131 manufactor control fuel air metering also p0135 o2 sensor heater ciruit malfunction bank1 sensor1 and p0307 cylinder misfire


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Dec 06, 2010 | 1995 Saab 900

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Three trouble codes


Trouble Code: P0421


Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:

Air leaks at the exhaust manifold or in the exhaust pipes
Catalytic converter is contaminated, damaged or has failed

Front HO2S and/or the rear HO2S is loose in the mounting hole

Front HO2S older (aged) than the rear HO2S (HO2S is lazy)

Front HO2S or rear HO2S is contaminated with fuel or moisture


Trouble Code: P1173

HO2S-21 (Bank 2 Sensor 1) Circuit Malfunction

Possible Causes:

Base engine mechanical fault affecting one or more cylinders

EVAP Purge valve stuck or the hoses to the valve are reversed

Fuel metering fault (fuel injector sticking open or leaking)

Fuel pressure too low or too high, fuel supply contaminated

HO2S element is contaminated or the HO2S heater has failed

PCV system has air leaks at the valve or related hoses



Trouble Code: P0174
Adaptive Fuel Trim Too Lean (Bank 2)

Possible Causes:

Vehicle driven low on fuel or until it ran out of fuel

One or more injectors restricted or pressure regulator has failed

Fuel delivery system supplying too much or too little fuel during cruise or idle periods (e.g., faulty fuel pump, or dirty fuel filter)

Air leaks after the MAF sensor, or air leaks in the PCV system

Air leaks at the EGR gasket, or at the EGR valve diaphragm

Exhaust leaks before or near where the front HO2S is mounted

HO2S is contaminated, deteriorated or it has failed

Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)

Base engine -mechanical- fault affecting one or more cylinders

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3 Answers

What does computer code p1131 manufacturing control fuel air metering mean


Code p1131 manufacturer control fuel air metering, on a 2003 Ford Taurus. Where is part? Is there an easy way to see if it can be fixed without buying the expensive part?

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