Question about 2003 Mitsubishi Montero

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Po181 code. How to fix this code - 2003 Mitsubishi Montero

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Testing of course really needs to be done before anything else. Your code P0181 says that there is a problem with the fuel tank temp. sensor. The most common causes for this code is the fuel temp sensor, an open wire on that circuit or PCM (computer) failure. I would start by checking the connector on the fuel tank making sure it is good and connected with no water or debris in the connector. Then you will need to check for continuity from the tank to the PCM to make sure there isn't an open wire. The green wire with the red stripe is the wire for the temp sensor. That wire ggoes from the tank to terminal/pin number 81 on the connector at the PCM. You should ahve right around zero or full continutity if checking from the conector at the tank to the PCM. You will need good diagnostic equipment in order so see the readings for the temp sensor (fuel) in order to rule that out for sure. If you have a good connection and the right continuity for your wire from the tank to the PCM you may want to try and replacing the sensor first cause the PCM is would be a lot more money and if you need to waist money replacing parts try that first (just my opinion). If you can get your hands on the proper diagnostic equipment that would save you buying not needed parts by being able to check the sensor readings. It's a little technical this code is but hope I was able to help out at least a little bit....

Posted on Jul 27, 2013

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