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Old 02-26-2011, 11:34 PM
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Help with DTC codes

Just did a key dance to find out why my check engine light is on... got the following codes.

p0440 and p0522.

couldnt find what the first code is, but the second is the oil pressure sensor? Had my oil changed with royal purple a few weeks ago....

any ideas and causes? I had a check gas cap light for the longest time. I finally bought a new gas cap (mopar, the one on car prior was not mopar). The light went off for about a month.. then came back. A few weeks ago i unplugged battery and it wiped the check gas cap and is still OFF. Possible correlation?


unrelated.... car is running loud... almost sounds like a wisp sound coming from the intercooler area. I honestly have no idea.. i have a video attached but it probably is unclear. any ideas?
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Old 02-26-2011, 11:40 PM
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Re: Help with DTC codes

the oil pressure sensor is right next to the oil filter and can be easily broken when changing the filter
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Old 02-26-2011, 11:47 PM
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Re: Help with DTC codes

P0440-Evaporative emission (EVAP) system - malfunction


check hose connection or an intake leak or evap canister purge valve



p0522-Engine Oil Pressure Sensor/Switch Circuit Low Voltage


what engine do you have
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Old 02-26-2011, 11:52 PM
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Re: Help with DTC codes

have the 4.7 v8

sorry guys im clueless... new to the scene..learning as I go.

you guys mention to check these hoses and stuff, but IDK where to look and stuff. Im trying to search and find online
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Old 02-27-2011, 12:07 AM
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Re: Help with DTC codes

i just replaced the oil pressure sensor on my 4.7 jeep. its $22 from advance auto and simple as removing the old one and replacing it, but you will need like a 24mm socket. it is located right next to the oil filter, just look for the wires and you will see it.

for the other look near your air intake for a loose hose
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