Question about 2003 Volvo S80

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I have a 2002 S 40 and after replacing timing belt the check engine light came on with a " Bank 1 Lean " code appeared

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Chech to see if you burst the oxygen sensor wire or it disconnect

Posted on Aug 02, 2010

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Posted on Jan 02, 2017

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2000 toyota alvalon check engine light keeps coming on for code p0171 after replacing 02 oxygen sensor in bank 1


code p 0171 refers to system too lean bank 1===causes ---intake /exhaust leak---AIR system---MAF/VAF sensor/s---fuel pressure/ pump---injector/s---heated oxygen sensor (HO2S) the one in the exhaust manifold for bank 1 nearest the firewall

Apr 15, 2017 | Toyota 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

Code po171 system too leen bank 1


DTC P0171 - System Too Lean (Bank 1)
Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC (Diagnostic Trouble Code) is very similar to P0174, and in fact your vehicle may show both codes at the same time.

I would suggest that you take a look at the front oxygen sensor. Typically speaking the oxygen sensor causes this code to appear. Here is the possible cause list from the manual for your car.

Trouble Code: P0171 - Fuel System Lean (Bank 1)

Possible Causes:
Air leaks in intake manifold, exhaust pipes or exhaust manifold
Base engine mechanical problem causing a lean A/F condition
Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP)
Fuel delivery component fault (clogged filter, low fuel pressure)
O2 element is contaminated, deteriorated or it has failed
Vacuum hose is disconnected, broken, leaking or loose

Hope this helps (remember to rating this answer ans leave us a testimonial comment). Thank you for using FixYa.

Oct 12, 2011 | 2000 Ford F150 Flareside SuperCab

1 Answer

I have a 2000 Hyundai Sonata that runs rough when you start it up. I hooked a code reader to it and it said that system was lean on bank 1 and multi misfire and not reading 02 sensor on bank one. I have...


time to get the engine properly scanned, real time not code scanner, then you will have the readings from sensore and actuators, diagnose from there

Dec 14, 2010 | Hyundai Motor 2004 Sonata

2 Answers

1999 Chevy silverado 5.3 engine setting codes p171 p174 already replaced mas air flow and checked for leaks


oxygen sensor failure
P0171 System too Lean (Bank 1) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
P0174 System too Lean (Bank 2) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
hope this is a bit of a push in the right direction ...

Feb 02, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

MY LEXUS IS200 SE engine management light came on had it checked it was sensor 1 bank 2 had it replaced it came on again sensor 1 bank 1 had it replaced it came on again sensor 1 bank 2 HELP!!!!!!


What was the code? lean mixture? If so make sure there is no leak in the exhaust. I have worked on a lexus suv, but it was an 89. It had a lean mixture code. After examination I noticed a exhaust leak which was not apparent at first, there is a section in the exhaust the is very thin, and prone to leakage, causing the lean mixture code.

Jun 30, 2009 | 2001 Lexus RX 300

2 Answers

OBD Code says ''Lean Bank 2 - System too lean


Bank 2 is generally the passanger side. Recently, We have run across a few system to lean codes in Fords. We have ended up changing the O2 sensors.

May 28, 2009 | 1999 Ford F150 Regular Cab

1 Answer

CHECK ENGINE LIGHT ON , WITH CODE SYSTEM TOO LEAN


Possible failed bank 1 sensor 1 oxygen sensor..

Mar 29, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Lean bank one on my toyoata corrolla code scan


I would try replacing the spark plugs. The lean code can be caused by an ignition miss as the oxygen isn't used up completely in a misfiring cylinder.

Mar 10, 2009 | 2003 Toyota Corolla

2 Answers

Check engine light on


Generally when these codes appear it is due to insufficient fuel pressure. Test your fuel pump to ensure it is within specs. Have you changed your fuel filter?

Jan 15, 2009 | 2000 Ford Expedition

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