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Ford f150 engine codes p0156,p0136,p0174,p0171,p1131,p1151

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Posted on Jan 02, 2017

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SOURCE: 98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+

po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

Posted on Dec 15, 2008

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dttech
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SOURCE: p0136 p0156 p0401 p0402 p1131 p1151 p0171 p0174

All of that going on all at the same time is not likely at all. Are you sure the engine is actually overheating or is that just what your instrument panel is telling you?
With all of those things going on at the same time, here is what I would do. First I would take a REAL HARD look at the charging system. Goofy stuff like this is often caused by a battery with a shorted cell or an alternator with bad diodes that is feeding AC current into the computer network. The computers tend to do really goofy things when they are suffering from malnutrition.

Once I am satisfied that the charging system is in good condition, then I would clear the codes and go on a road test. If the check engine light comes back on, I would immediately scan the engine controller to find out which of the codes came back and fix it FIRST. Many times, fixing one code can fix ALL the codes. By doing it this way, you are more likely to find which one is your MAIN problem.

If your engine is actually overheating, all I can say is you need to diagnose your engine cooling system to find out why...all of the misfire codes could very likely be a result of the engine overheating and fixing the engine cooling system will most likely fix these codes.

Posted on Sep 28, 2011

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Chevy Silverado error p1151


P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2


p1131 p1151 p0171 p0174 p1131 p1151 p0171 p0174
All of these p1131 p1151 p0171 p0174 codes indicate a problem with a lean condition. This engine is known for vacuum leaks, so before you start throwing oxygen sensors at the problem, it pays to perform some diagnostics.
Start by cleaning the MAF sensor. Spray the sensor with CRC MAF sensor cleaner. Next, check the plastic vacuum lines, especially where they meet with rubber boots. If they are cracked or the rubber is swollen, replace the line. Then check the rubber elbow that holds the PCV valve. That elbow is a know failure point. In fact, the entire PCV tubing is a trouble spot on these engines. (thanks Ford).
After you've checked for vacuum leaks, check the operation of the oxygen sensors. The easiest way to do that is to disconnect the sensor from the harness. Connect one lead of your digital voltmeter to the black wire on the sensor and the other lead to battery negative. Then start the engine and add fuel (either propane, starting fluid, or carb cleaner) into the throttle body to force the mixture to rich. You should see a corresponding increase in voltage as you add fuel (from 0 volts to slightly less than 1 volt). Start and stop the fuel enrichment and watch the meter to see if the volts drop as you stop adding fuel. If you see no change, the sensor is dead. Replace it.
You can also use the fuel enrichment procedure to locate intake gasket leaks.
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1
P1151P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2
P0174 system lean bank 2
P0171 system lean bank 1


This is the only info that didn't come back directly to FORD (yet still mentions it) instead of GM. Not to sure you got the correct code.

Jul 08, 2014 | 1999 Chevrolet Silverado 1500

1 Answer

Ford windstar trouble codes p0171-p0174- p1131-p1151-p0305


All these are fuel trim codes and fuel control O2 sensor related codes, you have something that is causing this as all the sensors seldom fail. My advice here is to see a Ford dealer for the diagnostics before any parts are replaced.

Jun 27, 2012 | 2001 Ford Windstar

2 Answers

How do i fix emission codes p1131 p1151 p0171


TSB
05-22-6
ISSUE:
Some 2001-2003 F-150, 2004 F-150 Heritage and 2001-2003 E-150/250 vehicles equipped with a 4.2L engine may exhibit the malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1131 and/or P1151 (system too lean bank 1 or 2). This condition may be due to leaking isolator bolts/port gaskets in the upper-to-lower intake manifold mounting area. This condition is sometimes intermittent and may not be apparent on a warmed-up engine.


SERVICE PROCEDURE

Perform a self test. If DTC P1131 and/or P1151 are the only codes stored in the powertrain control module (PCM) proceed to Step 2. If any additional DTCs are present, follow normal diagnostic procedures found in the PC/ED Manual.

Remove the upper intake and replace only the port gaskets (9H486) and isolator bolt assemblies (9S479). The new isolator bolt assemblies use a rubber material that is green in color, do not install the old isolator bolt assemblies with the black rubber material. Do not replace any other intake parts or gaskets.
While the upper intake manifold is removed, check the exhaust gas recirculation (EGR) orifices that are pressed into each primary port of the lower intake manifold. If any of the orifices are plugged with soot, clean and unplug them with a pick and solvent.

PART NUMBER PART NAME
1L3Z-9H486-AA Port Gasket
3F2Z-9S479-AA Isolator Bolt

Jan 13, 2010 | 2003 Ford F150 Regular Cab

1 Answer

Poor idle dtc P1151, P1131,P0174, P0171. runs ok


Change plugs, and Mass Air Flow sensor. This should do the trick

Nov 29, 2009 | 2003 Ford Taurus

3 Answers

I have a 98 f-150 5.4 triton showing coads p1131,p1151,p0170,p0174,p0136&p0156 goes on highway ok but idles rough and stalls


I would start with the Rubber elbow on the back of the intake, next to the IAC.

This has a habit of cracking, and causing unmetered air after the MAFS to get into the system. The closed loop control is not counting it, and the O2 sensors are reporting the lean condition on the back side.

Ignore the IAC notation in this picture ( only 1 I had ) You are going to want to remove the plastic cover on the throttle body, and take a look at the rubber vac line that is shown in this picture.
d7c4687.jpg

The other item could be the intake manifold is loose, but start with the vac lines, clear the code with a scanner, a battery disconnect for 5 min, or 2 driver cycles to see if at least the P0170 & P0174 codes are gone.
The P0136 & P0156 could be a melted wire as mcneb posted about, this is usually by the exhaust manifold. After checking and repairing the vac lines ( if required ) follow the harness from the 2nd set of O2 sensor ( think that is HO2S-12 & -22 if I recall correctly ) to the engine compartment.

Nov 17, 2009 | 1998 Ford F150 Regular Cab

1 Answer

99 f-150 error codes


Try to pin point, (if not already) what the other codes are for. How does the truck run while idling and driving. Also, if the code for one sensor is showing then it's best to go ahead and replace it - it may be bad due to another issue (or code that has shown up as well) and chances are, you'll need to replace the second (if equipped) O2 sensor.

Mar 31, 2009 | 1999 Ford F150 Regular Cab

3 Answers

Where is the fuel pressure regulator located on an 2002 f150 v6?


in the center of the motor,in the rear on the fuel rail

Jan 16, 2009 | 2002 Ford F150 Regular Cab

2 Answers

98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+


po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

Dec 15, 2008 | 2003 Ford E250

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