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Fault code P1151 what's this? - Expedition Ford Cars & Trucks

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P1151 indicates that the heated exhaust oxygen sensor is indicating that you have a too rich gas mixture

Posted on Oct 06, 2010

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2002 Ford Mustang GT. I was driving and it made a bang noise and now I head exhaust or air. check engine light is flashing codes P1131, P0303 and P1151. has anyone else had this problem


code p 0303 refers to cylinder 3--misfire ===causes among others is --engine mechanical fault
the bang could be a major destruction of the engine

Sep 03, 2015 | Ford Cars & Trucks

1 Answer

Does Changing a P1151 and P0175 on a ford Wind star solve the problems associated with it?


P1151 is indicating an problem with the upstream O2 Sensor on Bank 2. Bank 2 is the even cylinders side O2 sensor. The P0175 code indicates a rich condition in Bank 2 exhaust. This indication, if by itself, would indicate a faulty MAF Sensor or a vacuum leak, but since you already have the P1151, change the Bank 2 O2 sensor first and most likely both codes will clear.

Aug 05, 2014 | Cars & Trucks

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GOT POCKET SCAN, RESULTS CODES ARE P1131,P1151,P0171,P0174,P1174


Put OBD2 Codes followed by the number into google

You can read all day long

Then study obd2 systems

Codes do not tell you what is wrong
& never to replace anything

Codes are used with diagnostic factory
manuals & trouble charts to COMPONENT
TEST never replace a thing until they fail a test
& you find a system fault

Nov 15, 2012 | Cars & Trucks

1 Answer

Check engine lite, codes P0151, P0153, P1151, mechanic says incorrect voltage from PCM, replace PCM


CODE PO151 - HO2S - 21 BANK 2 SENSOR 1 CIRCUIT LOW INPUT. CODE PO153- HO2S BANK 2 SENSOR 1 CIRCUIT SLOW RESPONSE. CODE P1151 - LACK OF HO2S - 21 SWITCHING HO2S SIGNAL LOW INPUT. POSSIBLE CAUSES TO YOUR PROBLEM AIR INTAKE SYSTEM LEAKING VACUUM HOSES LEAKING OR DAMAGED.AIR LEAKS LOCATED AFTER THE MAF SENSOR MOUNTING LOCATION OR IN THE PCV SYSTEM. YOU COULD HAVE BASE MECHANICAL FAULT LIKE LOW CYLINDER COMPRESSION , VALVE TIMING OFF.HO2S CIRCUITS WET OR OILY CORRODED OR POOR TERMINAL CONTACT. HO2S SIGNAL CIRCUIT OPEN SHORTED TO GROUND SHORTED TO POWER OR THE SENSOR HAS FAILED. LOW FUEL PRESSURE OR VECHICLE DRIVEN UNTIL IT WAS OUT OF FUEL. BEFORE REPLACING PCM CHECK ALL VACUUM HOSES ON INTAKE MANIFOLD. REPLACE FUEL FILTER. CHECK YOUR SPARK PLUGS. IF SPARK PLUGS OIL COATED PROBLEM IN THE ENGINE ITSELF. YOU HAVE WORN PISTON RINGS, WORN VALVE GUIDES AND WORN VALVE SEALS. IF PCM WAS BAD YOU WOULD HAVE FLASHING CHECK ENGINE LIGHT CAR WOULD RUN POORLY.YOU WILL HAVE FAULT PCM CODE IF PCM FAILED. YOUR PROBLEM IN HO2S SENSORS AND THE ENGINE AIR FUEL MIXTURE.

Jul 07, 2011 | 1996 Ford Windstar

1 Answer

Code p1151


Possibilities -

HO2S fault
Air leak after MAF
EGR valve stuck open
Vacuum leak
Wiring (water ingress) fault to HO2S
Contaminated fuel

Dec 02, 2010 | 2003 Ford Taurus

1 Answer

1998 mercury sable wagon with the V6 Duratec engine getting a P1131 reading what is it


its running lean on bank 1, eitehr a vacuum leak, or an o2 sensor.

http://www.denlorstools.com/autoblog/2009/07/ford-p1131-p1151-fault-codes-30-dohc-o-2-diagnostics/

Sep 03, 2010 | 1998 Mercury Sable

1 Answer

1999 lincoln navigator fault code


Your cilinder 2 sensors are going wacky. located close to the cilinder itself. you may need to replace them chec your repair book for specific locations. Thenget a OBDII reader to erase code. Some autos if you disconnect your battery cable for a few may reset it to stop the blinking.

Jun 30, 2010 | 1999 Lincoln Navigator

1 Answer

Have engine trouble codes P1151 and P1131


If both, P1131 and P1151 trouble codes are set at the same time, the problem will most likely be attributed to a vacuum leak past the MAF (Mass Air Flow) sensor or something else that would likely affect BOTH banks. If the problem is only causing one code or the other, but NOT both, the problem will most likely be something that would affect one bank, like a bad O-2 sensor or a fuel injector; the most common cause of a single code either the P1131 or P1151 in my experience has been a bad Oxygen sensor.

Nov 07, 2009 | 2001 Mazda Tribute

1 Answer

Fault codes ''failed smog check''


http://www.bba-reman.com/content.aspx?content=Ford%20P%20Powertrain%20Diagnostic%20Fault%20Codes


from experience the system is to lean not getting enough gas which causes lost of power pinging rough idoling and it clogs your fuel injectors which will cause failed smog test good luck

Jul 07, 2009 | 1999 Mercury Cougar

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