O2 sensors are showing giving me trouble codes

These are my trouble codes but so where do I start testing.


i understand the O2 sensors send signals to the pcm that control fuel injection so im wondering if thats what is causing my random misfires but I would just like to have a better idea of how/where I begin testing wires? Help

Starting out this Diagnoses of my Multiple Trouble codes with
Trouble Code
P0358
Ignition Coil H / Primary Circuit and Secondary Circuit

This code is Present when the Engine Control Module (ECM) does not receive a valid pulse from an ignition Coil
The Primary Circuit is identified as the Low Voltage side of the ignition system and it includes the battery, ignition switch, primary coil winding, a triggering mechanism (such as a crankshaft sensor) and switching device (such as an ignition module or ECU)
The Secondary Circuit Is identified as the High Voltage Side and includes the coil pack and spark plugs.

Modern Engines are less complicated and each cylinder has its own coil pack. The Low Voltage enters the top windings of the coil pack and then enters into the bottom windings which are tighter wound when the circuit is cut off by a switching device (usually the Powertrain Control Module or PCM) an electromagnetic field collapses onto these windings and produces a High Voltage current that enters the Spark plug. This new age ignition system eliminates the need for a Distributor, Rotor, Cap, or Coil / Spark Plug Wires.

The Powertrain Control Module will send trouble codes P0351 thru P0358
when it detects a problem with the ignition coil circuit, The Last Number of the trouble code indicates the cylinder in question.

In addition to an illuminated check engine light, the most common symptom is an ignition misfire. Often, P035x codes will also be accompanied by a misfire code (P0300-P0308).

PO300 Stands for Random Misfire Detected
PO301 Thru PO308 Designates which one of the 8 cylinders is misfiring

My truck is Showing Trouble Codes For PO300 Thru PO308

What are the common causes of code P0358?
Faulty ignition coil
Problem in the ignition coil circuit
Problem with the PCM
The next Trouble code
P1391
Intermittent loss of CamShaft Positioning Sensor and CrankShaft Positioning Sensor

this code is shown when the PowerTrain Module (PCM) or also Known As the Engine Control Module (ECM) determines that the Crankshaft Positioning Sensor is reading That the Crankshaft is not positioned according to factory standards and that means the tim

This Trouble Code is somehow related to or perhaps causing the Above three problems with Code PO368

The Symptoms of this kind of trouble code are
Engine power loss
Hard starting or no start at all
Engine stumbles or stalls
Possible causes of this trouble code are
Faulty CrankShaft Positioning Sensor (CKP)
Open or shorted CKP sensor harness
Poor electrical connection in the CKP sensor
Stretched or jumped timing belt or chain
Faulty CamShaft Positioning Sensor (CMP)
Open or shorted CMP sensor harness
Poor electrical connection in the CMP sensor
this code can also be thrown if the cylinders are showing intermittent misfires
or if the timing belt is off (the Timing Belt / Chain can jump after a CMP Or a CKP has been replaced).

Ok the next Trouble Code on my Dodge is
P1682 - Ignition 1 Switch Circuit 2

Code P1682 Displays if the ECM detects a difference in the voltage levels of the two main power inputs to the ECM.

The First Power Input Circuits or ignition circuit is powered by a powertrain relay through a fuse. It powers all the internal Engine Control Module (ECM) circuits associated with the Throttle Actuator Control (TAC). The (TAC) Is the electronic communication of your foot on the gas pedal to the the throttle on the engine.

The Second Ignition Voltage Circuit is supplied by the run/crank relay through a fuse, and is used to power the remaining internal ECM circuits.



This can be caused by a Faulty Ignition Switch or a fuse/relay involved in the circuit