Question about 2004 Chrysler 300M
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Dec 12, 2013 | Cars & Trucks
Aug 20, 2012 | 2000 Chrysler 300M
Nov 04, 2011 | 1999 Chrysler 300M
P0129 Barometric Pressure Too Low
The shop manual gets into great detail about 5-VOLT SUPPLY CIRCUIT SHORTED TO BATTERY VOLTAGE.
Basically it is receiving the information from the Manifold Absolute Pressure sensor (MAP sensor)
Changing the MAP SENSOR may correct this issue. The problem is that the sensor may not be the issue and it may be the circuits that feed info to the sensor. The pressure is translated to and measured in voltage and the electronics that create the voltages could be at fault. The MAP sensor is on average $100.00 and cannot be returned once installed so if you replace it and the problem is not fixed you will not be able to get that money back.
P0442 Evaporator Emission Control System Leak Detected (small leak)
This is caused by a decrease in expected fuel tank pressure. It could be a loose or leaking gas cap. I leak in the evaporator hose or canister or in some cases a gas tank replacement.
I hope this helped.
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