Question about Honda Civic
The ecm may need resetting ( use the scan tool to reset)
what you have is a code report but you may have to talk with a honda service center to have them explained
you could talk with an accredited auto specialist shop with experience on the make and see it that can help with diagnosing the problem
Posted on Apr 05, 2017
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Posted on Jan 02, 2017
SOURCE: code PO131
Code PO131 is O2 sensor circuit low voltage , bank 1, sensor 1. That sensor I would say is the one in the exhaust manifold. I would check voltage to the sensor from the computer. If the voltage is not 5 volts, then it could be a computer problem or a wiring problem. I have seen factory wiring and connectors give a voltage problem. Check for a damaged or burnt, pinched wire. You need to know for sure that the voltage is correct to the sensor. Intermittent problems are hard to trace , but patience and knowledge helps.
Posted on Mar 11, 2009
SOURCE: 2001 toyota corolla check engine
Mass Air Flow sensor! Just remove your air filter cover. Go to Auto Zone and purchase some solvent. Spray past the air filter and it should correct the problem. If not, replace the Mass air-flow sensor. This is commonly mistaken for an oxygen sensor. Mine did this and I followed these steps and it fixed the light. BTW, the light stayed on for 5 years before I fixed it. Never hurt anything. It's normally something to do with emissions. Dummy lights. :)
Posted on Mar 30, 2009
You will need roughly 5 drive cycles for the obd2 to allow you to pass emissions. If you have no other issues with the car I see no reason to get rid of it.
Here is a link of what constitutes a cycle.
Posted on Mar 05, 2010
Testimonial: "Thanks for the quick response!"
If you have a 2004 lincoln ls,the PO420 is-- Catalyst System Efficiency Below Threshold. ( Bank 1) The list of possible causes are long. I have the same vehicle, and the Emissions Manual,which is several hundred dollars. Don't let anyone tell you it is a bad Converter. It may be, but it is only six years old. I would check for codes. The ignition coils (Coil-On-Plug) go bad on all Fords and a misfire, resulting overheating of exhaust system etc,will set all kinds of codes,and they may not be related, to the real issues. Lincoln is where one of everything goes,when it comes to the latest technology. Check that the O2 Sensors are screwed in tight. Later on you may need to have them checked out,if no ignition issues or malfunctioning coolant temp sensor issues. Use only 5-20 Oil. I use Mobil 1 synthetic. Hopefully your not using any,and ruining the converter. Make sure you have the system full of coolant,including the Degas container,the one where antifreeze mix goes. Remember GO5 Yellow antifreeze on ford products. Also bleed the hose next to the brake booster to let out air,in the coolant system. You can check for above normal fuel pressure. I would not go to a Dealer and spend more than necessary. Find a good shop that knows these vehicles. You can't fix every problem on all makes that come thru your doors today. Hope I give you a start on things to have checked. I would stand in the service bay by the car and have the tech prove what is wrong before I would authorize any part replacement.
Posted on Apr 07, 2010
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