RE: 2003 Land Rover Discovery Check Engine Light

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RE: 2003 Land Rover Discovery Check Engine Light

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RE: 2003 Land Rover Discovery Check Engine Light - 1/6/2008 5:41:03 PM

okdiscoguy

Posts: 2485
Joined: 2/16/2007
From: Tulsa, OK
Status: offline

Mike, where do you get your code info from? All I got was:

P0171
Generic
System Too Lean (Bank 1)

i go to www.iequus.com . They have most of the P1XXX specific codes for LR...

_____________________________

97 Discovery SD-7 156K miles
04 Cadillac CTS 34K miles
Good Oil
number of posts does not = knowledge (unless it is me)

(in reply to Disco Mike)

Post #: 11

RE: 2003 Land Rover Discovery Check Engine Light - 1/7/2008 2:08:07 PM

umoms

Posts: 42
Joined: 10/24/2007
Status: offline

I have a Mann air filter c25146 it looks it pretty good shape.
I have pulled the codes a few times. Sometimes i get

P0130
P0171
P1171

And sometimes i just get P0130 on its own.

Check Engine light usually after 1-2 trips.

Should I try any gas cleaner or fuel injector cleaner? Or what suggestions do you guys have?

(in reply to okdiscoguy)

Post #: 12

RE: 2003 Land Rover Discovery Check Engine Light - 1/11/2008 9:19:04 AM

Disco Mike

Posts: 10500
Joined: 4/27/2006
Status: offline

quote:

ORIGINAL: umoms

I have a Mann air filter c25146 it looks it pretty good shape.
I have pulled the codes a few times. Sometimes i get

P0130
P0171
P1171

And sometimes i just get P0130 on its own.

Check Engine light usually after 1-2 trips.

Should I try any gas cleaner or fuel injector cleaner? Or what suggestions do you guys have?

Need more info on yours, what year, how many miles, what octane gas are you running and what tune related work has been done on it?

_____________________________

Mike
Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers.
99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45.

(in reply to umoms)

Post #: 13

RE: 2003 Land Rover Discovery Check Engine Light - 1/14/2008 3:43:35 PM

umoms

Posts: 42
Joined: 10/24/2007
Status: offline

2003 land rover discovery with 92k miles. I been using 93 Premium gas from BP. I honestly dont know the previous history because I just bought it not too long ago. It drives fine with no apparent problems. Air filter looked fine.

I just added some fuel injector cleaner and gas cleaner...

What do you suggest next?
Start with the O2 sensor?

Should I just start with the drivers side front O2 sensor?

(in reply to Disco Mike)

Post #: 14

RE: 2003 Land Rover Discovery Check Engine Light - 2/9/2008 10:17:16 AM

umoms

Posts: 42
Joined: 10/24/2007
Status: offline

Ok I replaced the Front Drivers Side O2 sensor and it cleared the codes for a few weeks and now I get these codes.

p1300
catalyst damaging misfire multiple cylinders drive cycle. Signal out of range.

p0308
cylinder 8 misfire detected

p0305
cylinder 5 misfire detected

p0300
random misfire detected

p0308
cylinder 8 misfire detected

Any suggestions now?

(in reply to umoms)

Post #: 15

RE: 2003 Land Rover Discovery Check Engine Light - 2/9/2008 11:11:11 AM

Spike555

Posts: 5068
Joined: 6/22/2007
From: Grand Rapids MI
Status: offline

You need to replace the other O2 sensor too, you always replace them all at once.
With that many misfires it is time for a tune up. You need plugs AND wires. If you drive it for to long with multiple misfires it will ruin the cats.
Most things need to be replaced all at the same time, O2's, cats, tires, brakes. If you need to replace one cat you then you need to replace both. They are both the same age and same mileage right?
Replace the other O2 and the plugs and wires. Use Magnacor wires and Iridium plugs. You can get the wires from www.roverconnection.com and the plugs from AutoZone.

_____________________________

If it ain''''''''''''''''''''''''''''''''t leakin'''''''''''''''''''''''''''''''' it must be empty!
Yes, one man can change the world.
If the citizens are affraid then they are easier to control.

The "Storm Trooper",'''''''''''''''''''''''''''''

(in reply to umoms)

Post #: 16

RE: 2003 Land Rover Discovery Check Engine Light - 2/9/2008 5:49:19 PM

okdiscoguy

Posts: 2485
Joined: 2/16/2007
From: Tulsa, OK
Status: offline

quote:

ORIGINAL: umoms

Ok I replaced the Front Drivers Side O2 sensor and it cleared the codes for a few weeks and now I get these codes.

p1300
catalyst damaging misfire multiple cylinders drive cycle. Signal out of range.

p0308
cylinder 8 misfire detected

p0305
cylinder 5 misfire detected

p0300
random misfire detected

p0308
cylinder 8 misfire detected

Any suggestions now?

YOu need to replace the O2 sensors all at the same time.

Sounds like you are due for new plugs and wires as well. Magnacor 8MM and Bosch +4 plugs. www.lrrforums.com has decent prices on the wires.

_____________________________

97 Discovery SD-7 156K miles
04 Cadillac CTS 34K miles
Good Oil
number of posts does not = knowledge (unless it is me)

(in reply to umoms)

Post #: 17

RE: 2003 Land Rover Discovery Check Engine Light - 2/11/2008 11:44:38 AM

umoms

Posts: 42
Joined: 10/24/2007
Status: offline

just my luck..... the check engine light went off 2 minutes before I was gonna drop it off to my mechanic..... I am thinking the extremely below zero weather may have caused the check engine light to come on?

Is it normal for the check engine light to just turn off on its own after getting codes like that?

(in reply to okdiscoguy)

Post #: 18

RE: 2003 Land Rover Discovery Check Engine Light - 2/11/2008 1:09:52 PM

jkid

Posts: 598
Joined: 9/26/2007
Status: offline

The light can go off, it is probably just has not misfiring all of the time so the code clears itself. It will be back. You need new plugs and wires most likely and replace your other O2 sensors. They don't last forever and replacing them is routine maintenance at your mileage.

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01 D2 SE (90K miles) Stock For now
1982 Mercedes 300SD (270k miles)

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Post #: 19

RE: 2003 Land Rover Discovery Check Engine Light - 3/28/2008 1:30:31 PM

sysroute

Posts: 55
Joined: 2/2/2007
Status: offline

I am getting codes 1174 & 1171. The dealer says it needs new breather hoses. I have a 2003 RR with 63K miles on it. Any idea what those hoses are or where I might get them?

(in reply to jkid)

Post #: 20