Question about 1998 Dodge Caravan

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Obd11 codes what to do

I am getting obd11 codes on my obd11 sacanner for my 2002 F150 pickup. codes are:P0135, P0401, P1131, P1151, and, P0174. what do I need to fix or repair.

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A good technican.

Posted on Mar 28, 2014

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Posted on Jan 02, 2017

SOURCE: what is codes P016 Po441 P0135 2002 intrepid

016 is crankshaft position sensor. This needs to be diagnosed properly. Alot of times this part is replaced when an underlying condition is really the cause.
441 is an evaporative emmisions leak or a faulty purge or vent solenoid This vehicle also may have an vapor management valve so diagnosing is best so you dont replace the wrong parts when maybe the whole problem was a bad fuel cap or a vacuum leak somewhere.
And the 0135 is the 02 sensor heater circuit. This usually points to a faulty sensor and if so both upstream sensors will need replacing soon.
Now with all those codes I wonder if they happen all at once. There should be no way thier related but if they all happen at once I would start by removing the battery terminals and cleaning. And any grounds on the engine or body under the hood, clean them also. Most likely this isnt your issue but its the one thing you can do for free that might help. Then get the codes cleared. Disconnecting the battery may erase the codes.. If the codes come back you will need to get them addressed.

Posted on Nov 05, 2009

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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

P1131,p1151,p0174


Hello,
P1131 = Lack of HO2S11 switch - sensor indicates lean, ( upstream heated oxygen sensor )
This oxygen sensor is located before the catalytic converter, ( refered to as UPSTREAM )

P1151 = Lack of HO2S21 switch - sensor indicates lean, ( could be up, or downstream heated oxygen sensor ) " Downstream ", meaning after the catalytic converter.

PO174 = System too lean, ( bank 2 ) The fuel/air mix ratio is bad.

These DCT codes are generally caused by a problem with the emissions system. The following items are a few of the most common items to trigger those codes.

1. Dirty air filter. ( very common )
2. Faulty idle air control valve. ( common )
3. MAF, ( mass air flow ), sensor. ( very common )

All 3 of the above can prevent the onboard computer from determining the proper fuel/air mix ratio.
The oxygen sensors measure to insure the fuel/air mix produces maximum power with minimal emissions.

I hope this helps you.
Feel free to contact me in the comment section if you have a question.

Feb 15, 2011 | 2002 Ford F150 Regular Cab

2 Answers

I have a 2002 f150 4.6 codes p1131-p1151-po316-po306 runs bad under 1000 rpms wont idle going down road stumbles at steady 45 mph not sure what to do next what do u think


p0306 is a cyl #6 misfire
p0316 is unknown to me. sry.
p1131 and p1151 deal with the O2 sensors 1151 says Bank 2 Sensor #1 Heater Circuit intermittent. 1131 says that HO2S 11 indicates lean.

p0306. Check the plugs wires and coil at Cyl #6 (second one back from front on drivers side, if it's the same as my Stang)

Sep 12, 2010 | Ford F-150 Cars & Trucks

2 Answers

Service engine soon light on - codes P0171, P0174, P1131 and P1151 on a 2002 4.6L V8 Does this combination of codes focus on a particular emission component?


Hi, 1151 is an 02 sensor code, 1131 is also 02 sensor code,
0174 lean condition bank 2, and 0171 is lean bank 1. Either this is in need of a whosale of repairs or you have computer issues, From looking at the codes i would first do a complete tune up, Including wires, And inspect for a vacume leak before replacing any 02 sensors..
Take care

Aug 07, 2010 | 2002 Ford Explorer

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

4 Answers

P0401,p0402,p1405,p0171,p0174,p1131,p1151


I have a 1996 ford f150 4.9 liter.The truck runs great but bad gas mileage.the only problem is i am getting codes p0401and p0402 what should i do.

Oct 14, 2009 | 2000 Ford Windstar

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

1 Answer

MY TRUCK WILL NOT START ITS A F150 2002


p1131 is o2 sensor bank one it is reading lean it may need to be replaced and the other one is 02 sensor bank two it is the same code. check your alternator make sure its working and clean the battery terminals

Nov 14, 2008 | 2004 Ford F150

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