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What is a p1131 code and how do i fix it

What parts do i need and will the check engine light go off

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

MOST LIKELY THE UPSTREAM (BEFORE THE CATALYTIC CONVERTOR) O2 SENSOR IN BANK ONE IS DEFECTIVE, ALSO CHECK FOR ANY ENGINE VACUUM LEAKS, A CAN OF CARB SPRAY HELPS TO SHOW IF ANY LEAKS ARE PRESENT, THE IDLE RPM WILL INCREASE WHEN THE CARB SPRAY HITS A LEAK, IF NO LEAKS FOUND REPLACE THE BANK ONE O2 SENSOR.

Posted on Dec 13, 2008

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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

Changed o2 sensor and trouble code p1131 keep coming up


What make vehicle do you have ? This code doesn't necessarily mean the sensor is bad ! That is why these thing's need to be tested before replacing , check with a scan tool that shows engine data . This code indicates a lean condition ( vacuum leak ) or a ( fuel problem ) P1131 Lack Of HO2S Switch Sensor Indicates Lean Fixed Lean O2 Is the sensor lying

Jun 07, 2015 | 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

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

What code P1131 and P0125 mean as far as buying a part to fix the problem. my check engine light wont go of because of these codes and i need to find out what the codes mean so i can fix it myself cant...


These codes can be googled. Cthe cause and fix can vary with the different car manufactures In your case ists a lean condition, according to you o2 sensor. And lean conditions can be caused by many instances, like a manifold or vacuum leak, faulty injector(s), low fuel pressure,
P0125 can be:

Mar 26, 2010 | 1998 Ford Escort

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

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?

Apr 27, 2009 | Ford Explorer Cars & Trucks

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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