Codes P0171 & P0174 - Jaguar Forums - Jaguar Enthusiasts Forum

Go Back   Jaguar Forums - Jaguar Enthusiasts Forum > Jaguar Models ( Modern ) > X-Type ( X400 )
Log In 

X-Type ( X400 ) 2001 - 2009
Sponsored by Jagbits
Click Here

Codes P0171 & P0174

LinkBack Thread Tools Search this Thread
Old 12-15-2010, 07:20 PM
Join Date: Dec 2007
Location: Kentucky
Posts: 47
Thanks: 0
Thanked 1 Time in 1 Post
Angry Codes P0171 & P0174

Hi Guys my 2004 X type 2.5 just thru these codes .I had new plugs fitted 2 weeks ago at a cost of $425.00 Ouch. Did not want to tackle that job myself.
Vehicle is running fine just annoying that the check engine light is on.
Local Auto Zone pulled the codes and said is was the Bank 1 upstream CO2 sensor and the Bank 2 Downstream CO2 sensor. Running Lean
Checked on the forum and found it could be a Dirty MAF sensor causing the codes to appear. Were is the MAF sensor and any tips on how to clean it.


Last edited by John Mac; 12-15-2010 at 07:45 PM. Reason: New info from forum
Reply With Quote
Old 12-15-2010, 08:33 PM
mohrd's Avatar
Veteran Member
Join Date: Jun 2008
Location: Red Deer, Alberta CANADA
Posts: 2,008
Thanked 113 Times in 108 Posts

lots of discussion about vacuum leaks at this time of year, every year. do a quick search on those lean codes and you'll see discussions around three likely culprits that are easy to check and fix.
Loved my '02 X-Type, 3.0 Sport, Platinum on Warm Charcoal,18" Proteus wheels, minor mods. Now she is loved by another.
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Nuts or not? bdboyle XJ XJ8 / XJR ( X308 ) 9 10-08-2015 02:16 PM
Failure engine mode JCam XK8 / XKR ( X100 ) 19 09-28-2015 09:20 PM
123 fix, P0171, P0174 all modern Jaguars. Bob Gelston XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 8 09-14-2015 11:08 PM
2003 V6 5 speed Problems Solved - Thanks OkieTim S-Type / S type R Supercharged V8 ( X200 ) 3 09-08-2015 04:48 PM
Thank you! OkieTim Jaguar Forums Feedback & Suggestion Center 2 09-02-2015 12:48 PM

2004, 30, code, codes, fix, jag, jaguar, p0171, p0171p0174, p0174, po171, po174, stype, type, xtype

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 03:58 AM.

JAGUAR and its logo are the registered trademarks of Jaguar Cars Limited. Jaguar Cars Limited is not affiliated with