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Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range.Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!
Fuel metering (fuel injector dirty) problem affecting Cylinder 1
Base engine (compression) problem affecting Cylinder 1
Ignition system (spark plug or plug wire) problem on Cylinder 1
P0068 Symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Lack/Loss of power - Engine rough idle Possible causes - Large vacuum leak - Leaking air duct system - Mass Air Flow (MAF) poor electrcial connection - Manifold Absolute Pressure (MAP) poor electrcial connection - Faulty Mass Air Flow (MAF) sensor - Faulty Manifold Absolute Pressure (MAP) sensor - TP sensor not seated properly. - Faulty Throttle Position (TP) sensor. - Dirty throttle body When is the code detected? The Powertrain Control Module (PCM) monitors operation rationality check by comparing sensed throttle position to mass air flow readings P0068 DODGE Description The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing Throttle Position (TP) to Mass Air Flow (MAF) readings. If, during a self-test, the comparison of the TP sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory.
changing your VSS is easy , the hardest part is finding it...look around the housing near your CV axles..the differential in there near there is a 8 or 10mm bolt holding it in witha wire connector on the end...if you pull it out you will see a plastic gear on the end of the sensor.... YOU CAN DO IT!!!!
i would pull the codes with a scanner first so youre going in the right direction-however, from my experience this car has possibly 2 speed sensors- one is called an input sensor and is probably near where one of the axles goes into the trans. the other is the VSS- vehicle speed sensor. if either one is faulty it could set a check engine lite,and the trans uses these sensors to determine shifting points as well as making the speedo work. keep me posted.