Question about 1996 Ford Explorer

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Emmision code 1151 keeps setting

I have replced the dpfe sensor. The o2 sensors are about 2 years old. 1151 is a lean exhaust

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  • themelans Dec 13, 2008

    yes - The sftrim on the scanner range is between 13-16. 02 sensors are 2years old. sam with dpfe.

  • yadayada
    yadayada May 11, 2010

    DID U HOOK THE HOSES UP CORRECTLY

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  • Ford Master
  • 61,249 Answers

When u write a question give all the info.

FROM THE EMSSIONS REPAIR MANUAL:

Symptoms You will likely not notice any drivability problems.
Causes A code P1151 may mean that one or more of the following has happened:
Electrical:

  • Short to VPWR in the harness or HO2S
  • Water in the harness connector
  • Open/shorted HO2S circuit
  • Corrosion or poor mating terminals and wiring
  • Damaged HO2S
  • Damaged PCM
Fuel System: Induction System: PCV system: EGR System:
  • Leaking gasket
  • Stuck EGR valve
  • Leaking diaphragm or EVR
Base Engine:
  • Oil overfill
  • Cam Timing
  • Cylinder compression
  • Exhaust leaks before or near the HO2S(s)

Posted on Dec 13, 2008

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1 Answer

It's dumping gas into the manifold and detonation in exhaust manifold during exhaust firing cycle


Hi Mark:
My train of thought is along the line that for unburned fuel to get into the exhaust manifold, it still has to go through a cylinder so there is either no spark to light it up, or it's so rich that it's not burning. Have you had a chance to check the plug tips for indicators as to what's happening in the combustion chamber?
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Jul 28, 2015 | Cars & Trucks

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Code p0130 and code p0150


These 2 articles are from another source. They explain exactly what all the causes and cures are for your Codes. The problem seems to be on the #2 bank. P0130 - 02 Sensor Circuit Malfunction (Bank I Sensor 1) Article by
dale.jpg
Dale Toalston
ASE Certified Technician OBD-II Trouble Code Technical Description

02 Sensor Circuit Malfunction (Bank I Sensor 1)
What does that mean? The O2 sensor produces a voltage based on oxygen content in the exhaust. The voltage varies between .1 and .9 Volts, .1 indicating lean and .9 indicating rich.
The ECM constantly monitors this voltage while in closed loop to determine how much fuel to inject. If the ECM determines that the O2 sensor voltage was too low (less than .4 Volts) for too long (for more than 20 seconds (time varies with model)), this code is set.
Potential Symptoms Depending if the problem is intermittent or not, there may be no symptoms other than MIL (malfunction indicator lamp) illumination. If the problem is constant, then symptoms may include one or more of the following:

  • MIL illumination
  • Engine runs rough, missing or stumbling
  • Blows black smoke from tail pipe
  • Engine dies
  • Poor fuel economy
Causes Usually the cause of P0130 is a bad oxygen sensor, however this isn't always the case. If your o2 sensors haven't been replaced and they are old, it's a good bet that the sensor is the problem. But, It could be caused by any of the following:
  • Water or corrosion in the connector
  • Loose terminals in the connector
  • Wiring burnt on exhaust components
  • Open or short in the wiring due to rubbing on engine components
  • Holes in exhaust allowing unmetered oxygen into exhaust system
  • Unmetered vacuum leak at the engine
  • Bad o2 sensor
  • Bad PCM
Possible Solutions Using a scan tool, determine if the Bank 1, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly.
1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage. If it drops out, fix the appropriate part of the wiring harness where problem resides.
2. If it doesn't switch properly, try to determine if the sensor is accurately reading the exhaust or not. Do this by removing the fuel pressure regulator vacuum supply briefly. The o2 sensor reading should go rich, reacting to the extra fuel added. Reinstall regulator supply. Then induce a lean condition by removing a vacuum supply line from the intake manifold. The o2 sensor reading should go lean, reacting to the enleaned exhaust. If the sensor operates properly, then the sensor may be okay and the problem may be holes in the exhaust or an unmetered vacuum leak in the engineicon1.png (NOTE: Unmetered vacuum leaks at the engine are almost always accompanied by lean codes. Refer to the appropriate articles for diagnosing an unmetered vacuum leak). If the exhaust does have holes in it, it's possible that the o2 sensor may be misreading the exhaust because of the extra oxygen entering the pipe via those holes
3. If none of this is the case and the o2 sensor just isn't switching or acts sluggish, unplug the sensor and make sure there is 5 Volt reference voltage to the sensor. Then check for 12V supply to the o2 sensor's heater circuit. Also check for continuity to ground on the ground circuit. If any of these are missing, or aren't their proper voltage, repair open or short in the appropriate wire. The o2 sensor will not operate properly without proper voltage. If the proper voltages are present, replace the o2 sensor.
Register now to ask a question (free) Related P0130 DTC Discussions P0150 - 02 Sensor Circuit Malfunction (Bank 2 Sensor 1) OBD-II Trouble Code Technical Description

02 Sensor Circuit Malfunction (Bank 2 Sensor 1)
What does that mean? The O2 sensor produces a voltage based on oxygen content in the exhaust. The voltage varies between .1 and .9 Volts, .1 indicating lean and .9 indicating rich.
The ECM constantly monitors this voltage while in closed loop to determine how much fuel to inject. If the ECM determines that the O2 sensor voltage was too low (less than .4 Volts) for too long (for more than 20 seconds (time varies with model)), this code is set. The code P0150 refers to Bank 2.
Potential Symptoms Depending if the problem is intermittent or not, there may be no symptoms other than MIL (malfunction indicator lamp) illumination. If the problem is constant, then symptoms may include one or more of the following:

  • MIL illumination
  • Engine runs rough, missing or stumbling
  • Blows black smoke from tail pipe
  • Engine dies
  • Poor fuel economy
Causes Usually the cause of P0150 is a bad oxygen sensor, however this isn't always the case. If your o2 sensors haven't been replaced and they are old, it's a good bet that the sensor is the problem. But, It could be caused by any of the following:
  • Water or corrosion in the connector
  • Loose terminals in the connector
  • Wiring burnt on exhaust components
  • Open or short in the wiring due to rubbing on engine components
  • Holes in exhaust allowing unmetered oxygen into exhaust system
  • Unmetered vacuum leak at the engine
  • Bad o2 sensor
  • Bad PCM
Possible Solutions Using a scan tool, determine if the Bank 2, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly.
1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage. If it drops out, fix the appropriate part of the wiring harness where problem resides.
2. If it doesn\'t switch properly, try to determine if the sensor is accurately reading the exhaust or not. Do this by removing the fuel pressure regulator vacuum supply briefly. The o2 sensor reading should go rich, reacting to the extra fuel added. Reinstall regulator supply. Then induce a lean condition by removing a vacuum supply line from the intake manifold. The o2 sensor reading should go lean, reacting to the enleaned exhaust. If the sensor operates properly, then the sensor may be okay and the problem may be holes in the exhaust or an unmetered vacuum leak in the engineicon1.png (NOTE: Unmetered vacuum leaks at the engine are almost always accompanied by lean codes. Refer to the appropriate articles for diagnosing an unmetered vacuum leak). If the exhaust does have holes in it, it's possible that the o2 sensor may be misreading the exhaust because of the extra oxygen entering the pipe via those holes
3. If none of this is the case and the o2 sensor just isn't switching or acts sluggish, unplug the sensor and make sure there is 5 Volt reference voltage to the sensor. Then check for 12V supply to the o2 sensor's heater circuit. Also check for continuity to ground on the ground circuit. If any of these are missing, or aren't their proper voltage, repair open or short in the appropriate wire. The o2 sensor will not operate properly without proper voltage. If the proper voltages are present, replace the o2 sensor.
Register now to ask a question (free) Related P0150 DTC Discussions
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    I own a 1996 Nissan Maxima, automatic, v6. Started to shut down on me when making stops. Always cranked back up. Changed out knock sensor, starter, air flow, battery cables...few other minor things. Still doing same thing but not near as often. After all this, codes read P0150, P0136 and P0105. Era...

Dec 15, 2013 | 2012 Lincoln MKX Base 4dr SUV 3.7L V6...

1 Answer

Can code P1151 cause code P0307


I doubt it.
Code 1151 is for the lack of switching on the O2 sensor on bank two. The sensor appears to show bank two is too lean but there could be other issues.
Code 307 is for a miss on cylinder 7 which could be fuel or ignition related. The problem causing code 307 could affect code 1151 if cylinder 7 is on the opposite side of cylinder 1.

Aug 30, 2013 | 2003 Ford Mustang

1 Answer

1997 nissan sentra 1.6l trouble code PO136


DTC P0136 - Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
Essentially the same as P0137, a P0136 code refers to the second oxygen sensor on Bank 1. The O2 oxygen sensor produces a voltage between .1 mV and .9 mV. The ECM monitors O2 sensor voltage and determines if exhaust is lean or rich. O2 sensor voltage is high when exhaust is rich and low when exhaust is lean. The ECM monitors this voltage and increases or decreases fuel injector pulsewidth according to engine fuel/air ratio. If the ECM detects low HO2Sensor voltage for an extended period, it will set P0136 Conditions required to set: HO2 sensor voltage is low for longer than 2 minutes (minutes depend on model of vehicle. Could be up to 4 minutes)

There may be no visible symptoms to the driver. Poor fuel mileage, possible misfire, depending on O2 sensor position when sticking.

A code P0136 may mean that one or more of the following has happened:
Faulty O2 sensor leak in exhaust close to O2 sensor
Short to voltage on O2 signal circuit
Open in circuit resistance caused by corrosion in connector

If you need additional details, feel fr4ee to contact us clicking the previous faulf code links.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

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2 Answers

2002 ford explorer 2 door sport codes 0171 and 0174 came on replaced maf sensor plus cleaned pcv valve codes came back on after 4 days please help if possible


This lean condition can be cause by leaky vacuum hose and / or defect DPFE manifold pressure sensor.
On top of the engine / near the end of the air intake,you will see the DPFE sensor.
It should has FORD part #

F77E-9J460-AB

Check the connector and the body of the sensor for crack (vacuum leak)
Follow each plastic tubes and look for leaks.

mustgo_95.jpg

Sep 05, 2011 | 2002 Ford Explorer Sport

1 Answer

I have a 1999 ford ranger xlt 3.0 6cylinder i got an 1151 code online shows its an ho2s sensor switch if thats the correct code i want to replace it i cant find where it goes or what it is


Hello!Here is a diagram of the exhaust system for your 3.0L engine (showing one bank, or side)...And the location of the HO2 Sensor...Code 1151; A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time....It does not mean that the sensor IS bad, only that it COULD be bad...There are two of them and the code isn't telling you which bank is at fault...Before you spend money on new sensors....Refer to the diagram below for location...Remove...Clean with throttle body cleaner...install...Disconnect + battery terminal for 5 minutes, then re-connect to clear code...

The O2 sensor before the convertor is called (Front or Upstream)...After the convertor (Rear or Downstream)....See photo of sensors below...


saailer_167.jpgUPSTREAM


saailer_168.jpgDOWNSTREAM









saailer_108.gif

Guru....................Saailer

Sep 02, 2011 | Ford Ranger Cars & Trucks

1 Answer

What do the code 44 mean and whats to be repaired


code 44 set on pre 1995 gm vehicles is a o2 sensor reading lean or bias to .2 volts or less. it could be the o2 sensor, it could be a vacuum leak making the exhaust have too much oxygen thus making the o2 sensor to read lean or put out a lean reading. If the o2 sensor is old 75k-100k it's probably time for a new one anyway. an exhaust leak near (upstream) to the o2 sensor can pull in air even though the exhaust is leaking out and fool the o2 sensor with the added oxygen also. you could also have a fuel delivery problem creating a true lean condition. there are ways a tech can test an o2 sensor to see if it's the sensor or a mechanical problem causing the code.

Sep 29, 2010 | GMC Caballero Cars & Trucks

1 Answer

2006 hundai elantra P2270 code. If this is an O2 sensor, which one?


Possible O2 sensors:

P2270 O2 Sensor Signal Stuck Lean Bank 1 Sensor 2
P2271 O2 Sensor Signal Stuck Rich Bank 1 Sensor 2
P2272 O2 Sensor Signal Stuck Lean Bank 2 Sensor 2
P2273 O2 Sensor Signal Stuck Rich Bank 2 Sensor 2
P2274 O2 Sensor Signal Stuck Lean Bank 1 Sensor 3
P2275 O2 Sensor Signal Stuck Rich Bank 1 Sensor 3
P2276 O2 Sensor Signal Stuck Lean Bank 2 Sensor 3
P2277 O2 Sensor Signal Stuck Rich Bank 2 Sensor 3
P2278 O2 Sensor Signals Swapped Bank 1 Sensor 3 / Bank 2 Sensor 3
---
This is Bank 1 (closer to the dash panel) Sensor 2 (located after the catalytic converter).

---
Note: A malfunctioning front oxygen sensor may cause fuel trim codes to set.
  1. Several Diagnostic Trouble Codes use specific terminology to refer to sensor location. The illustration and key below explain the following terms:
  2. Engine BANK Bank 1 is closer to the dash panel, (also referred to as RH or right hand). Bank 2 is closer to the radiator, (also referred to as LH or left hand).
  3. UP Refers to Sensor 1 or "front sensor". It is located closer to the exhaust manifold and before the catalytic converter.
  4. DOWN Refers to Sensor 2 or "rear sensor." It is located after the catalytic converter.
  5. The following examples show how to interpret oxygen sensor terminology:
  6. B1/S1 = Bank 1/Sensor 1 = Dash panel side, BEFORE the catalyst or "upstream"
  7. B2/S2 = Bank 2/Sensor 2 = Radiator side, AFTER the catalyst or "downstream"

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Code 2195 wont go away after replacing o2 sensors and fuel filter


Computer is seeing lean condition via o2 sensor. Most likely a vacuum leak check all hoses, ports,egr valve & dpfe sensor & egr solenoid & intake manifold.

Jun 07, 2010 | 2005 Lincoln Navigator

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