What does the P0405 do and what does it look like on the eng. smoke out of the ex.white

hi
White smoke is burning engine oil.
mostly when Engine oil is changed or topped up
little oil get dropped and when engine heats up. it burns the oil.
but once oil is burnt then no more smoke is there.

unless you have a leak
thanks

burning coolant most likely blown head gasket

Check for a coolant leak.

old post
smoke or steam.?
smoke lingers long, steam goes away fast
steam smells like antifreeze, sweet and nasty
smoke smells like, well, oil burning,

take eng. dip stick drip one drop of oil on a hot manifold
smell smoke, now.

White smoke means you are burning water or coolant. Check your coolant system, if it is low you may have a head gasket issue

P0405 means Exhaust Gas Recirculation Sensor A Circuit Low. It may caused by Short to ground in EGR signal or Reference circuits or voltage in EGR ground or signal circuits;Bad EGR valve; or Bad PCM wiring issues due to chafing or loose terminals.
P0300 is Random/Multiple Cylinder Misfire Detected. It may be something wrong with spark plugs or wires,coil,oxygen sensor,fuel injector,etc.
As for P2670, it seems for the Actuator Supply Voltage "B" Circuit Low.

greetings

I thing there is the compressor wrong.If the power is changing when a smoke is coming from the tail pipe means- COMPRESSOR.Just mention - oil is also type of fuel,but coming blue smoke at the back.Worst-white smoke.That is really bat

P0340 is for camshaft position sensor circuit malfunction so the problem can be in you hav already changed sensor, then you need to check wiring from sensor to ecu and if the wires are ok than check the ecu! It can be either of them cousing the problem.

Dear,
well can you advise more details about the smoke colour is it white or black?
Regards, Eng. Ghassan Alasmar

this indicates that you have a blown head gasket. you may not have water in the oil pan but it's because the water is not leaking into your oil galleys,but instead leaking into the cylinders and being burned hence the white smoke.. there is a big myth that you will get water in the oil with a blown head gasket . there might be trace amounts but the only time you get water in the oil is if the heads crack or the block cracks othere wise most times it's just getting burnt in the cylinders,hence the great amount of white smoke. please rate this thanks.