Error code P0075
How to Identify and Fix Common car Problems ?
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Rotate the multimeter dial and set it to measure AC (V~) or DC (V…) voltage. Note the results. If the solenoid is operating normally, the multimeter reads a voltage that matches the rated voltage of the valve; otherwise, the coil is faulty and needs to be replaced.
This is what is known as Manual Reset. To cause the valve to change from its rest state, the coil must be energised and the lever or knob pulled to the fully open position. If the valve is energised without the manual intervention, it will not open.
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The make and model of the vehicle helps, but is not necessary at the moment. When a low fuel pressure misfire is set, there is a lean condition that has been detected by the sensors and one of the codes is telling us in which cylinder this is occurring. A possibility is a restricted fuel injector, loose injector harness, poor pin fit in the wire harness, and an air leak near that cylinder’s port in the intake manifold.
I’m leaning more towards a leak or crack somewhere creating an air leak since we also have a turbo related code stored and an intermittent rough start when cold. I strongly suggest having a qualified technician perform an inspection to determine the root cause. YourMechanic has several available technicians that can assist you with a Check Engine Light inspection and determine exactly what is giving rise to codes P0313, P0299, and P0304.
Most likely, the P0601 prevents the PCM from getting any codes from the engine sensors. The memory module error may cause in data corruption for collected sensor values, lose of data over multiple sampling periods, or failure of the data collection to work at all. Replacing the PCM was a necessary expense.
If you need assistance with the "new" codes, I would recommend having a Check Engine Light inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose the new error codes and get an accurate assessment of the repairs needed.
It may be possible for you to locate this connector in your vehicle and check the wiring nearby for any visual damages or tampering. This connector is usually located under the driver side kick panel and the wiring associated with it is fairly easy to see. Starting with an inspection of the OBD-II connector for damages would be my best recommendation. Also, simply erasing the trouble codes may not solve whatever other issues you are having and could cause the Check Engine Light to come back on. You should have the Check Engine Light thoroughly diagnosed and have the issues addressed properly in order to resolve the trouble codes and avoid further damage that could cost even more time and money in the long-run.
Check the harness to the TPS for any debris or any corrosion. Hook up a paperclip to the harness and turn on the key. Use a multimeter and check for voltage at the pins of the harness. Make sure that the ground on the sensor is grounded and has no resistance. If you find that the harness is having too much resistance, then I recommend having the main engine harness replaced. If you have replaced the harness and still have the same problems, then the computer will need to be flashed or replaced.
I recommend having a professional, like one from YourMechanic, come to your home to diagnose your car’s no start condition before replacing any parts.