Question about 1997 Ford Aerostar Extended

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Engine light on

What is fault code P1131?

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P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1

http://www.ford-trucks.com/article/idx/7/247/article/Ford_OBDII_Diagnostic_Trouble_Codes__P1000P1999__Codes_Specific_to_Ford_vehicles.html

Basically that interprets that one or more of your cylinders has a bad injector, or poor fuel pressure to that bank. As far as which side of the engine is Bank 1, or Bank 2. I believe Bank 1 is usually on the left side of the engine, or driver's side if you're sitting in the driver's seat. Or, if the engine is Transversely mounted... The serpentine belt assembly is North, Bank 1 is the West side of the engine.

Posted on May 17, 2008

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Pull the positive post off fromm battery and wait for one minute. re-attach and this will reset computer. if it is already running ok then this is the likely problem.

Posted on May 28, 2009

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emissionwiz
  • 60887 Answers

SOURCE: P0401. P0133, P1131- emmision test

Based on what the tech manuals say I would change the DPFE sensor for the EGR Valve, careful not to tear the special silicone rubber hoses that go to it from the exhaust, as a Ford dealer tech I saw these codes allot, and the DPFE sensor was almost always the issue or the hoses going to it.

Posted on Oct 16, 2008

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SOURCE: fault codes ''failed smog check''

http://www.bba-reman.com/content.aspx?content=Ford%20P%20Powertrain%20Diagnostic%20Fault%20Codes


from experience the system is to lean not getting enough gas which causes lost of power pinging rough idoling and it clogs your fuel injectors which will cause failed smog test good luck

Posted on Jul 07, 2009

  • 2 Answers

SOURCE: check engine light

Code P0000 is monitoring test incomplete, or scan not completed
Not sure on the B0008, a b code is usually not a powertrain code

Posted on Jan 04, 2010

riceski
  • 1851 Answers

SOURCE: My 1998 Ford Contour 2.0L 157k Check Engine Light P1131

These codes are dealer specific. Please call you local dealer and they will give you the exact meaning.

For now I think you may find the code needs to be verified.
Here is my advice.
Have the reading done by - Auto Zone and also Advance Auto all over again. If the codes match
Take down the vin# - call the dealer and tell them the code. Ask them what it means and - -ask if your vin# brings up and recalls or service needs as issued by the factory. Some things never go out of date.

One last this - your header here says 1995 -your note says 1998. You need to sort that out as well.

Posted on Jan 28, 2010

  • 6 Answers

SOURCE: What is check engine light codes P 1401 and P1131?


This is for the P1401
HE - Exhaust Gas Recirculation (EGR) Systems
' var HIGHmap155714728 = '' // --> 155714728


This is for teh P1131
H - Fuel Control
' var HIGHmap155714613 = '' // --> 155714613

Posted on Jul 23, 2010

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3 Answers

What do code p1131 mean on a Lincoln Continental 2002


Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1
In simple terms, it means the engine computer is not "seeing" the O2 sensor switch from rich to lean like it should be doing.
When the O2 sensor switches to lean the computer makes the injectors open more to let in more fuel, until the sensor switches to rich.

Read more: http://www.autocodes.com/search_codes.php?q=p1131#ixzz43ZjTgHzk


Mar 21, 2016 | Lincoln Cars & Trucks

1 Answer

2002 Ford Mustang GT. I was driving and it made a bang noise and now I head exhaust or air. check engine light is flashing codes P1131, P0303 and P1151. has anyone else had this problem


code p 0303 refers to cylinder 3--misfire ===causes among others is --engine mechanical fault
the bang could be a major destruction of the engine

Sep 03, 2015 | Ford Cars & Trucks

2 Answers

What does code p1131 mean on a 2001 ford taurus


P1131 Ford
P1131 Ford - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1

Repair Importance Level: 3/3

Repair Difficulty Level: 2/3

http://engine-codes.com/p1131_ford.html

Forum Code

Possible causes

- Faulty Oxygen Sensor

- Vacuum leak affecting bank 1 only

- Fuel injector problem bank 1

- Check for cylinder misfire on bank 1

- Engine mechanical condition

Tech notes

Though the Oxygen (O2) sensor, the Engine Control Module (ECM) has detected a lean system, which means that there is either not enough fuel or and excessive amount of air in the system. Start by checking for vacuum leaks.

When is the code detected?

The Engine Control Module (ECM) detected bank 1 oxygen (O2) at its lean limit

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

P1131 Ford Description

A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Read more: http://engine-codes.com/p1131_ford.html#ixzz3izk89wMu

Aug 16, 2015 | Ford Cars & Trucks

1 Answer

P1131


Check Engine lights are the worst. The OBD2 code P1131 suggests a problem with the fuel air mixtures. Often though, the check engine alerts result from failing or faulty sensors rather than from what the sensor is suggesting. It is advisable to check the sensor first.
Good luck!

Jul 01, 2013 | Mazda 626 Cars & Trucks

1 Answer

Code p1131 please help


P1131 - Lack Of HO2S Switch - Sensor Indicates Leanxicon.jpghttp://engine-codes.com/p1131.htmlForum CodePossible causes- Vacuum leak affecting bank 1 only
- Fuel injector problem bank 1
- Check for cylinder misfire on bank 1
- Engine mechanical condition
- Faulty O2 sensor. Symptoms- Engine Light ON (or Service Engine Soon Warning Light)P1131 Description 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.

Jul 25, 2012 | 2009 Tata Indigo GLS

1 Answer

Engine light is on shows code p1131


P1131 FORD - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 1
This code is usually caused by a defective Oxygen sensor in cylinder bank one of your engine. Cylinder bank 1 is the bank of cylinders that contains number 1 engine cylinder.

Apr 18, 2011 | Ford Expedition Cars & Trucks

1 Answer

1998 mercury sable wagon with the V6 Duratec engine getting a P1131 reading what is it


its running lean on bank 1, eitehr a vacuum leak, or an o2 sensor.

http://www.denlorstools.com/autoblog/2009/07/ford-p1131-p1151-fault-codes-30-dohc-o-2-diagnostics/

Sep 03, 2010 | 1998 Mercury Sable

1 Answer

What is check engine light codes P 1401 and P1131?



This is for the P1401
HE - Exhaust Gas Recirculation (EGR) Systems
' var HIGHmap155714728 = '' // --> 155714728


This is for teh P1131
H - Fuel Control
' var HIGHmap155714613 = '' // --> 155714613

Jul 18, 2010 | 1997 Lincoln Town Car

1 Answer

Same issue as above, except on a 2002 Taurus.


P1131 (Fault Location) Heated oxygen sensor (HO2S) 1, bank 1, bank 1-not switching, fuel trim (FT) weak mixture (Probably Cause) Wiring, intake/fuel system, HO2S, EGR system, oil level, camshaft timing, cylinder compression, ECM. Could be any one of these. Is your oil level ok on your dip stick?

Jul 31, 2009 | 2002 Ford Escape

1 Answer

P0401. P0133, P1131- emmision test


Based on what the tech manuals say I would change the DPFE sensor for the EGR Valve, careful not to tear the special silicone rubber hoses that go to it from the exhaust, as a Ford dealer tech I saw these codes allot, and the DPFE sensor was almost always the issue or the hoses going to it.

Oct 16, 2008 | 1996 Ford Taurus

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