Question about 1997 Ford Aerostar Extended
What is fault code P1131?
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1
Basically that interprets that one or more of your cylinders has a bad injector, or poor fuel pressure to that bank. As far as which side of the engine is Bank 1, or Bank 2. I believe Bank 1 is usually on the left side of the engine, or driver's side if you're sitting in the driver's seat. Or, if the engine is Transversely mounted... The serpentine belt assembly is North, Bank 1 is the West side of the engine.
Posted on May 17, 2008
Pull the positive post off fromm battery and wait for one minute. re-attach and this will reset computer. if it is already running ok then this is the likely problem.
Posted on May 28, 2009
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Posted on Jan 02, 2017
Based on what the tech manuals say I would change the DPFE sensor for the EGR Valve, careful not to tear the special silicone rubber hoses that go to it from the exhaust, as a Ford dealer tech I saw these codes allot, and the DPFE sensor was almost always the issue or the hoses going to it.
Posted on Oct 16, 2008
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
Posted on Jul 07, 2009
These codes are dealer specific. Please call you local dealer and they will give you the exact meaning.
For now I think you may find the code needs to be verified.
Here is my advice.
Have the reading done by - Auto Zone and also Advance Auto all over again. If the codes match
Take down the vin# - call the dealer and tell them the code. Ask them what it means and - -ask if your vin# brings up and recalls or service needs as issued by the factory. Some things never go out of date.
One last this - your header here says 1995 -your note says 1998. You need to sort that out as well.
Posted on Jan 28, 2010
This is for the P1401
HE - Exhaust Gas Recirculation (EGR) Systems
' var HIGHmap155714728 = '' // -->
This is for teh P1131
H - Fuel Control
' var HIGHmap155714613 = '' // -->
Posted on Jul 23, 2010
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