Question about 2005 Land Rover Range Rover

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2005 range rover

I have a 2005 range rover that had check engine light on . I hooked up obd and got code p2a00 which was 02 sensor circuit range/performance bank 1 sensor 1. I had changed the passenger side front first and nothing changed. I was told that bank 1 sensor 1 is the driver side, so i ordered another front sensor and changed that one. Nothing changed. I noticed that when i start the truck in the morning is sounds great ,but a minute later it sounds and runs horrible.Any suggestions what else to check. Thanks Moe

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DTC P2A00: Oxygen Sensor Circuit Range/ Performance (Bank 1, Sensor 1)
Probable cause:

  1. Sensor or solenoid faulty
  2. Connector terminal contact damaged/corroded
  3. Wire harness fault. Check for correct voltage, open, short to ground or short to voltage
  4. Control unit software needs to be updated
  5. PCM or ECM faulty
  6. HO2S sensor contaminated/damaged

Posted on May 18, 2017

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: i have a range rover

Almost certainly blend motor failure. The heater matrix has several blend motors which divert hot or cold air the vents you select. The problem is, the buggers fail. Their £200 each and a nightmare to get to. Unless you actually want to remove your entire dash i suggest you put up with it. I understand a garage will charge about £1500.

Posted on Dec 03, 2008

  • 1 Answer

SOURCE: land rover code p1177

hello mrs melissa well i got the same car . and 1st it used to do the same with me i change the fuel pump and the plugs and then it still the same. but what i did i change the elic cup and now it's runing fine and so power full !

Posted on Mar 10, 2009

  • 44 Answers

SOURCE: Have a 2004 range rover with p122b code output speed sensor

This might sound odd, but it could be the gearbox output shaft bearing. If the transmission sounds noisier than it did, this could be the issue. Only way to check is to take off the transfer box. Not a major job, but takes a while. Some good fault code readers will read transmission codes, and allow you to see in real time what the sensor is doing - if the sensor suddenly loses signal, then it is very likely to be the a bearing (output shaft bearing most likely) that is at fault, causing the sensor ring to move too far from the sensor. Best guess, but could be other things, so don't go taking that transfer box off without getting a road test with a good fault code reader on it - or find someone with a portable oscilloscope and put that across the sensor - you should be able to see nice square wave pulses - if they get bigger and smaller (variable amplitude), that's your problem. If not, the fault lies elsewhere.

Posted on Aug 03, 2009

  • 4 Answers

SOURCE: All lights flicker in my 98 Range Rover

sounds like a ground problem. there is more than 1 ground wire on them

Posted on Oct 05, 2009

  • 1 Answer

SOURCE: 2004 Range rover Check Engine Light

The Range Rover actually has 4 oxygen sensors - 2 in front of the Cat and 2 behind the cat - try to check / replace the other 2

Posted on Dec 31, 2009

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Odometer flashing


You need to specify which light is flashing. I'm assuming it's the engine light. It could be a range of things. You need to hook up an OBD II to your vehicle and check the fault code. An auto electrician can do this or you could buy an OBD II for around $200.

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1 Answer

Free mechanical advice


With a defective O2 Bank 1 front sensor you would expect a poor warm engine running operation.

The before catalytic O2 sensor controls the fueling function to the engine. The mixture air/fuel ratio is calculated from the input from this critical sensor.

With a simple scan tool with graphic function the operation of this O2 can be observed, and diagnosed.

Suggest borrow or if car drive-able take to a parts store that will perform a complementary scan of the O2 function.

These are heated sensors and the heated circuit electrical connection could be the problem.. Exhaust leak, blocked catalytic converter, broken wire are all possible causes. By graphing the function and comparing to bank 2 diagnostics are relatively easy.

The reason at cold startup the engine is OK is that until the O2 heats up the engine is running open loop and the O2 is not hot. To be operational the O2 must be hot.


Hope this helps?

o2_sensors-hxbzx3n53di2afdrtf0yoxyz-5-2.png

screenshot_zpseasdfou1-hxbzx3n53di2afdrtf0yoxyz-5-5.jpg

new-o2--cat-switch-ratio---300_11292509-hxbzx3n53di2afdrtf0yoxyz-5-9.jpg

graph_o2_sensors_446x333-hxbzx3n53di2afdrtf0yoxyz-5-14.jpg

May 18, 2017 | Land Rover Cars & Trucks

1 Answer

Land Rover LR3 V8-SE 2005 -Code P0130


code p0130 refers to heated oxygen sensor (HO2S) 1 bank 1---circuit malfunction causes ---heating inoperative---poor connection---wiring--- HOS I would replace the sensor with a genuine unit to match the cpu settings

PLEASE RATE THIS REPLY FOR ACCURACY

Mar 24, 2013 | 2005 Land Rover LR3

2 Answers

Check engine light on 2005 land rover just came on. It has been very cold and will sit for hours in between driving does that have anything to do with light coming on ???


It is most likely that moisture is condensing on one or more of the wires that send errors to the master control module. If you need to know which sensor is affected take it to a shop that does inspections and have them hook up an OBD2 to it to get the codes.

Jan 23, 2013 | 2005 Land Rover LR3

1 Answer

Fault code 0134


P0134 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
Check wiring to Oxygen sensor.

Apr 22, 2010 | 1992 Land Rover Range Rover

2 Answers

2004 Range rover Check Engine Light


The Range Rover actually has 4 oxygen sensors - 2 in front of the Cat and 2 behind the cat - try to check / replace the other 2

Dec 21, 2009 | 2004 Land Rover Range Rover

1 Answer

Default code P1451 Land Rover Discovery II


The code P1451 on a Land Rover is "Leakage Detection Module Motor power stage error Drive cycle A:Signal out of range - above maximum". This is an OBD-II diagnostic system code. As far as I know, a 1995 Land Rover Discovery does not use a OBD-II system. Is it possible that this rover is a later model year

Oct 11, 2009 | 1995 Land Rover Discovery

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