You have a lean code. you most likley have a vacum leak.
P0172 - Fuel Injection System Too Rich Bank 1
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Possible causes
- Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connec
Possible solution
Dirty air filter of faulty air flow sensor are common causes of the problem.
P0174 - Fuel Injection System Too Lean Bank 2
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Possible causes
- Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection
Possible solution
Dirty air filter of faulty air flow sensor are common causes of the problem.
Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.
SOURCE: I got codes, p0172 and p0174 (mustang gt 4.6L)
When these codes are tried together it usually means O2 sensors are going bad. I suggest you get a real scanner on it before you spend $$$$$
SOURCE: Check Engine light is on my 1997 F150 with a small
CODE PO171 SYSTEM ADAPTIVE FUEL TOO LEAN BANK 1. CODE PO172 SYSTEM ADAPTIVE FUEL TOO RICH BANK 1. CODE PO174 SYSTEM ADAPTIVE FUEL TOO LEAN BANK 2. CODE PO175 SYSTEM ADAPTIVE FUEL TOO RICH BANK 2. ALL CODES COULD BE CAUSED BY AIR LEAKS AFTER THE MASS AIR FLOW SENSOR OR LEAKS IN THE PVC SYSTEM.EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED.FUEL INJECTORS RESTRICTED OR NOT GETTING ENOUGH FUEL WEAK FUEL PUMP. LEAKING EGR GASKET OR LEAKING EGR VALVE DIAPHRAM.MASS AIR FLOW SENSOR DIRTY CAUSES PCM TO UNDERESTIMATE AIRFLOW.
Testimonial: "Thanks for the . I changed the PVC valve and fuel filter and was able to reset the codes (I couldn't before). So far so good."
For
OBD code problems check the list of help links below. Click the link
below to go through its procedure.
--------------
------------
OBD Code is cleared but check engine light will not RESET?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-is-cleared-but-check-engine.html
---------
Diagnostic Code P2195?
http://schematicsdiagram.blogspot.in/2012/02/diagnostic-code-p2195-on-toyota-avalon.html
--------------
Diagnostic code P1330?
http://technoanswers.blogspot.in/2012/02/diagnostic-code-p1330-on-kia-2wd.html
------------
Diagnostic code P0700, P1330, P1121?
http://technoanswers.blogspot.in/2012/02/diagnostic-code-p0700-p1330-p1121-on.html
-------------
shows error code P1330?
http://technoanswers.blogspot.in/2012/02/2003-kia-sorento-shows-error-code-p1330.html
--------
OBD code P1330?
http://technoanswers.blogspot.in/2012/02/obd-code-p1330-on-2003-kia-sorento.html
------------
OBD code P01300?
http://technoanswers.blogspot.in/2012/02/obd-code-p01300-on-toyota-rav4.html
--------------
OBD code P0768?
http://repairhelpcenter.blogspot.com/2012/01/obd-code-p0768.html
------------
Evaporative Emissions
System codes details?
http://schematicsdiagram.blogspot.com/2011/11/evaporative-emissions-system-codes.html
---------------
Engine Misfire codes?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
----------------
Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
--------------
ABS trouble codes for all models?
http://repairhelpcenter.blogspot.com/2011/11/abs-trouble-codes-for-all-1994-00-acura.html
------------
Diagnostic code P0010?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0010.html
-------------
Diagnostic Code P1396?
http://howtobyme.blogspot.com/2011/11/diagnostic-code-p1396.html
--------------
Code P0452?
http://howtobyme.blogspot.com/2011/11/code-p0452.html
-------------
OBD code P0172 on Buick?
http://howtobyme.blogspot.com/2011/11/obd-code-p0172-on-buick-park-avenue.html
-------------
DTC Code P0321?
http://howtobyme.blogspot.com/2011/11/dtc-code-p0321-on-buick-park-avenue.html
------------------
Error Code P0471?
http://howtobyme.blogspot.com/2011/11/error-code-p0471-on-2007-dodge-ram-3500.html
-------------
P0304 Error code?
http://howtobyme.blogspot.com/2011/11/p0304-error-code-on-dodge-neon.html
-----------------
OBDII scan is receiving NO
BUS CODE?
http://howtobyme.blogspot.com/2011/11/obdii-scan-is-receiving-no-bus-code.html
-----------
How to Clear OBD error
Codes?
http://repairhelpcenter.blogspot.com/2011/11/how-to-clear-obd-error-codes-on-acura.html
----------------
Diagnosis and Testing Car
Components?
http://vwrepairhelp.blogspot.com/2011/11/diagnosis-and-testing-car-components.html
--------------
Diagnostic Trouble Codes
list?
Part 1.
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura_18.html
--------------
Diagnostic Trouble Codes
list?
Part 2.------
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura.html
--------------
Diagnostic Code 43 and 71?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-43-and-71-on-1991.html
------------------
Code P0132?
http://schematicsdiagram.blogspot.com/2011/12/code-p0132-on-acura-tl.html
-------------
P0031 code?
http://schematicsdiagram.blogspot.com/2011/12/p0031-code-on-dodge-dakota.html
--------------
How to get diagnostic Code
without OBD Scanner on Pre 1995 cars?
http://schematicsdiagram.blogspot.com/2011/12/how-to-get-diagnostic-code-without-obd.html
------------
OBD-II Trouble Code P0300?
http://schematicsdiagram.blogspot.com/2011/12/obd-ii-trouble-code-p0300.html
-------------
Getting diagnostic code
P0016?
http://schematicsdiagram.blogspot.com/2011/12/getting-diagnostic-code-p0016.html
--------------
How to Read Codes from
Check Engine Light?
http://schematicsdiagram.blogspot.com/2011/12/how-to-read-codes-from-check-engine.html
-------------
Diagnostic Code P0540
continues to return and the MIL light is on?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0540-continue-to.html
-----------
DTC Trouble Code P0401?
http://schematicsdiagram.blogspot.com/2012/01/dtc-trouble-code-p0401.html
-----------------
Car misfires and error code P0306 and P0303 is
shown?
http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
-------------
Diagnostic code P0463?
http://technoanswers.blogspot.com/2012/01/diagnostic-code-p0463-on-ford-f250.html
-------------
Check engine light with
codes P2195 and P2197?
http://howtobyme.blogspot.in/2012/01/check-engine-light-with-codes-p2195-and.html
------------
Diagnostic error code
P0121,P0505,P1000,P2101,P2104, P2110,P2135,P2106?
http://technoanswers.blogspot.in/2012/01/diagnostic-error-code.html
--------------
P0174, P0037 and P2197?
http://technoanswers.blogspot.in/2012/02/p0174-p0037-and-p2197-on-toyota-rav4.html
-----------
P0352 Obd code?
http://technoanswers.blogspot.in/2012/02/p0352-obd-code-on-toyota-rav4.html
-------------
Error code p0402?
http://technoanswers.blogspot.in/2012/02/error-code-p0402-on-ford-escape.html
---------
Obd Code P0763?
http://technoanswers.blogspot.in/2012/02/obd-code-p0763-on-lexus.html
-------
OBD code P0301, P0430 and
P0174?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0301p0430-and-p0174.html
---------
OBD code P0500?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0500-on-lexus-rx-300.html
-----------
This
will help.
Thanks.
For
OBD code problems check the list of help links below. Click the link
below to go through its procedure.
--------------
Diagnostic Code P2195?
http://schematicsdiagram.blogspot.in/2012/02/diagnostic-code-p2195-on-toyota-avalon.html
--------------
Diagnostic code P1330?
http://technoanswers.blogspot.in/2012/02/diagnostic-code-p1330-on-kia-2wd.html
------------
Diagnostic code P0700, P1330, P1121?
http://technoanswers.blogspot.in/2012/02/diagnostic-code-p0700-p1330-p1121-on.html
-------------
shows error code P1330?
http://technoanswers.blogspot.in/2012/02/2003-kia-sorento-shows-error-code-p1330.html
--------
OBD code P1330?
http://technoanswers.blogspot.in/2012/02/obd-code-p1330-on-2003-kia-sorento.html
------------
OBD code P01300?
http://technoanswers.blogspot.in/2012/02/obd-code-p01300-on-toyota-rav4.html
--------------
OBD code P0768?
http://repairhelpcenter.blogspot.com/2012/01/obd-code-p0768.html
------------
Evaporative Emissions
System codes details?
http://schematicsdiagram.blogspot.com/2011/11/evaporative-emissions-system-codes.html
---------------
Engine Misfire codes?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
----------------
Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
--------------
ABS trouble codes for all models?
http://repairhelpcenter.blogspot.com/2011/11/abs-trouble-codes-for-all-1994-00-acura.html
------------
Diagnostic code P0010?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0010.html
-------------
Diagnostic Code P1396?
http://howtobyme.blogspot.com/2011/11/diagnostic-code-p1396.html
--------------
Code P0452?
http://howtobyme.blogspot.com/2011/11/code-p0452.html
-------------
OBD code P0172 on Buick?
http://howtobyme.blogspot.com/2011/11/obd-code-p0172-on-buick-park-avenue.html
-------------
DTC Code P0321?
http://howtobyme.blogspot.com/2011/11/dtc-code-p0321-on-buick-park-avenue.html
------------------
Error Code P0471?
http://howtobyme.blogspot.com/2011/11/error-code-p0471-on-2007-dodge-ram-3500.html
-------------
P0304 Error code?
http://howtobyme.blogspot.com/2011/11/p0304-error-code-on-dodge-neon.html
-----------------
OBDII scan is receiving NO
BUS CODE?
http://howtobyme.blogspot.com/2011/11/obdii-scan-is-receiving-no-bus-code.html
-----------
How to Clear OBD error
Codes?
http://repairhelpcenter.blogspot.com/2011/11/how-to-clear-obd-error-codes-on-acura.html
----------------
Diagnosis and Testing Car
Components?
http://vwrepairhelp.blogspot.com/2011/11/diagnosis-and-testing-car-components.html
--------------
Diagnostic Trouble Codes
list?
Part 1.
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura_18.html
--------------
Diagnostic Trouble Codes
list?
Part 2.------
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura.html
------------
OBD Code is cleared but
check engine light will not RESET?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-is-cleared-but-check-engine.html
--------------
Diagnostic Code 43 and 71?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-43-and-71-on-1991.html
------------------
Code P0132?
http://schematicsdiagram.blogspot.com/2011/12/code-p0132-on-acura-tl.html
-------------
P0031 code?
http://schematicsdiagram.blogspot.com/2011/12/p0031-code-on-dodge-dakota.html
--------------
How to get diagnostic Code
without OBD Scanner on Pre 1995 cars?
http://schematicsdiagram.blogspot.com/2011/12/how-to-get-diagnostic-code-without-obd.html
------------
OBD-II Trouble Code P0300?
http://schematicsdiagram.blogspot.com/2011/12/obd-ii-trouble-code-p0300.html
-------------
Getting diagnostic code
P0016?
http://schematicsdiagram.blogspot.com/2011/12/getting-diagnostic-code-p0016.html
--------------
How to Read Codes from
Check Engine Light?
http://schematicsdiagram.blogspot.com/2011/12/how-to-read-codes-from-check-engine.html
-------------
Diagnostic Code P0540
continues to return and the MIL light is on?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0540-continue-to.html
-----------
DTC Trouble Code P0401?
http://schematicsdiagram.blogspot.com/2012/01/dtc-trouble-code-p0401.html
-----------------
Car misfires and error code P0306 and P0303 is
shown?
http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
-------------
Diagnostic code P0463?
http://technoanswers.blogspot.com/2012/01/diagnostic-code-p0463-on-ford-f250.html
-------------
Check engine light with
codes P2195 and P2197?
http://howtobyme.blogspot.in/2012/01/check-engine-light-with-codes-p2195-and.html
------------
Diagnostic error code P0121,P0505,P1000,P2101,P2104,
P2110,P2135,P2106?
http://technoanswers.blogspot.in/2012/01/diagnostic-error-code.html
--------------
P0174, P0037 and P2197?
http://technoanswers.blogspot.in/2012/02/p0174-p0037-and-p2197-on-toyota-rav4.html
-----------
P0352 Obd code?
http://technoanswers.blogspot.in/2012/02/p0352-obd-code-on-toyota-rav4.html
-------------
Error code p0402?
http://technoanswers.blogspot.in/2012/02/error-code-p0402-on-ford-escape.html
---------
Obd Code P0763?
http://technoanswers.blogspot.in/2012/02/obd-code-p0763-on-lexus.html
-------
OBD code P0301, P0430 and
P0174?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0301p0430-and-p0174.html
---------
OBD code P0500?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0500-on-lexus-rx-300.html
-----------
This
will help.
Thanks.
------------------------------------
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