Code po174 & po171 - Land Rover Forums : Land Rover and Range Rover Forum
 
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post #1 of 12 (permalink) Old 03-31-2010, 10:41 AM Thread Starter
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Code po174 & po171

fev days ago i check my disco witch the code tool and showe me 7 codes. i dont know what those means can u guys help me ...

PO174 AND PO171 and PO135
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post #2 of 12 (permalink) Old 03-31-2010, 10:49 AM
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P0171 and P0174 are lean for each bank of cylinders. No idea what the other one is. I used CRC Mass Airflow Cleaner from Pep Boys on my MAF and it seemed to solve the codes I was getting (for now anyway).
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post #3 of 12 (permalink) Old 03-31-2010, 10:53 AM Thread Starter
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is that mens i havto fix ciliders? cuz i dont understand. and the thirt one i find out mens upstream oxygen sensor heater left bank - short/open circut.

by the way what is this bank 1 and bank 2????
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post #4 of 12 (permalink) Old 03-31-2010, 11:00 AM
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You really need to sell that thing.
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post #5 of 12 (permalink) Old 03-31-2010, 11:07 AM Thread Starter
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why??? i call land rover service and they say oxygen sensor on exost i have to change them and thats all.... and bank 1 and bank 2 mens left side and right side ...


so whay i have to sold my car mr disco2orlando ???
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post #6 of 12 (permalink) Old 03-31-2010, 12:13 PM
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Quote:
Originally Posted by land rover discovery 2 View Post
is that mens i havto fix ciliders? cuz i dont understand. and the thirt one i find out mens upstream oxygen sensor heater left bank - short/open circut.

by the way what is this bank 1 and bank 2????
A couple of questions for you will help us help you.
What year is it, how many miles on it, what kind of air filter do you use paper or K&N type, how often do you change the air filter?
Get back to me.

Mike

Retired service manager, member of Solihull Society, SCLR, NCLR and the Santa Barbara 4Wheelers clubs.
99 D2, 3" lift, CDL with Detroit,T.T. lockers, 4:11's,H.D. axles, custom ft/rear bumpers with sliders, a 9500 HSI Warn winch and 5 HID's.

To DOWNLOAD the RAVE Manual, follow this link http://www.landroverresource.com/

Rover Radio issues or IPOD Adapters http://home.valornet.com/splacket/index.htm


Need Parts?
paulgrant@mac.com or call 203-770-1699
willtillery@roverguy.com or call 434-251-9331
P.T. Schram 260-804-0458

Lucky8, http://lucky8llc.com/
British Parts of Utah, http://www.bputah.com/
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post #7 of 12 (permalink) Old 04-01-2010, 04:55 PM Thread Starter
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ok so....i have 2002 land rover discovery 2 with 132 000 miles on it. i have k&n filter clean it three times...


.....
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post #8 of 12 (permalink) Old 04-01-2010, 07:08 PM
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Get two new front 02 sensors and get rid of that K&N and go back to a good paper filter. The oil is said to ruin the MAFS. Then consider new wires and plugs to address the misfire codes you probably have as well. Get good 8mm wires like:
IGN 790 Kingsborne Spark Plug Wires Ignition Wire Set - Kingsborne Ignition Spark Plug Wires Sets made in the USA
and a good set of plugs. It's time for some routine maintenance.

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post #9 of 12 (permalink) Old 04-01-2010, 07:46 PM Thread Starter
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really ?? why paper filter everyone said the K&N filters are the best for land rover ?
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post #10 of 12 (permalink) Old 04-01-2010, 08:07 PM
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really ?? why paper filter everyone said the K&N filters are the best for land rover ?
I ran one for years and thought it made a difference...in the long run I didn't notice any power gain like they say and it may allow more dirt and debri in as it allows more air..my MAFS died and it was blamed on the K&N filter. I threw it away, paper ones from here on out...

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post #11 of 12 (permalink) Old 04-02-2010, 05:20 AM
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Who is every one? They allow way more dirt thru the engine then any paper filter and the oil from the K&N will eventually kill your MAF.
That being said, install a factory air filter if you can get one, they are much better then ones from the auto parts stores, clear your codes and hope they go away, if not a new MAF along with a set of 02's will be in order.

Mike

Retired service manager, member of Solihull Society, SCLR, NCLR and the Santa Barbara 4Wheelers clubs.
99 D2, 3" lift, CDL with Detroit,T.T. lockers, 4:11's,H.D. axles, custom ft/rear bumpers with sliders, a 9500 HSI Warn winch and 5 HID's.

To DOWNLOAD the RAVE Manual, follow this link http://www.landroverresource.com/

Rover Radio issues or IPOD Adapters http://home.valornet.com/splacket/index.htm


Need Parts?
paulgrant@mac.com or call 203-770-1699
willtillery@roverguy.com or call 434-251-9331
P.T. Schram 260-804-0458

Lucky8, http://lucky8llc.com/
British Parts of Utah, http://www.bputah.com/
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post #12 of 12 (permalink) Old 04-02-2010, 06:22 AM Thread Starter
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oki thanks guy's !!!
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