Question about 2001 Jaguar XJ8

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2006 xj8 code po 171 engine light is on

Engine light is on code po 171

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Lean report from right side bank #1 oxygen sensor

Replace both sides upstream sensors if over 100,000 miles

They slow down & set a mil lamp

Leave the rear monitors

Posted on Dec 02, 2012

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Error code P 171 and P 174 and P0443


Type: OBD PO 171 --for the code discription,
cause & solutions

OBD PO 174
OBD PO 443

Sep 16, 2013 | Ford Windstar Cars & Trucks

1 Answer

Check engine lights on code po 171 toyota matrix 2007


There are two common things that cause this code. The first is a dirty MAF sensor. The sensor is located on the side of the air filter cover. It can be removed and visually checked for dirt/debris. If it is dirty it can be cleaned with MAF sensor cleaner. The second is leaking intake manifold gaskets. The engine will need to be cold and a smoker will be needed to check them. The good news is the parts are cheap and they can be done in less that an hour.

Apr 06, 2013 | Toyota Matrix Cars & Trucks

1 Answer

Replaced thermostate and coolant sensor now i have code po 171 to lean bank 1


You may have a engine vacuum leak, check for leaks with a bottle of propane gas and a length of rubber tube like fuel line, if you find a leak the engine idle will change. If no leaks are found the O2 sensor may be defective.

Nov 05, 2012 | 2006 Tracrac Chevy Colorado - Standard bed...

1 Answer

PO 171 and PO 174


You did not list a vehicle, so here are the generic codes.
Code 171 is system lean bank one and code 174 is system lean bank two.
The computer is getting a signal from the O2 sensors saying the fuel system is too lean, and the computer can not make it rich.
Possible causes are low fuel pressure, vac leaks, EGR valve problems, and so on.

Jul 27, 2012 | Cars & Trucks

2 Answers

Error codes po 134 po 153 po 154 po 155 po 171 po 174


PO 134 = 02 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SENSOR1)
PO 153 =02 SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 1)
PO 154 =02 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2 SENSOR 1)
PO 155= 02 SENSOR HEATER CIRCUIT MALFUNCTION (BANK 2 SENSOR 1)
PO 171= SYSTEM TOO LEAN (BANK 1)
PO 174= SYSTEM TOO LEAN (BANK 2)
I WOULD SAY YOU HAVE FAULTY OXYGEN SENSORS CAUSING THE ENGINE TO RUN TOO LEAN REPLACE THEM AND YOU SHOULD BE BACK IN BUISNESS

Feb 23, 2011 | 2004 Suzuki Grand Vitara

2 Answers

Subaru forester PO 171 code


Your fuel system is too lean. It's typically the primary O2 sensor (on the pipe between the engine and the catalytic converter). The mass airflow sensor is also possible but the O2 sensor is a wear item requiring periodic replacement and is more likely.

Jul 14, 2010 | 2005 Subaru Forester

1 Answer

2002 ford explorer check engine light on. codes po 171 po 300,1131,1151.seems to me that i may need bank1 and bank2 02 sensor


Check and clean the MAF (mass air flow sensor). you will need a #20 anti-tamper torx bit and some carburetor cleaner. Be careful with the sensor it is delicate.

Apr 21, 2010 | 2002 Ford Explorer

2 Answers

Code PO 171


http://www.automotiveforums.com/t473813.html

PO 171 is a system to lean code. This link will explain why this is and how to fix it,

Mar 02, 2010 | 1998 GMC Sonoma

2 Answers

I have a code that i need to get the right part..PO174


po 174 is typically accompanied by code po 171 however the code is normally a vaccum leak fords normally have an issue with the pcv valve hose collapsing a busting or either the plastic intakes have a vaccum leak that clears up when the engine warms up which is normally the upper plenum gaskets

Oct 19, 2009 | 1999 Ford Windstar

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