Hi guys,
I have recently had to sell my beloved 57 Focus Zetec Climate

due to increasing family size, ive replaced it with a 08 Galaxy Zetec 2.0 Tdci.
I originally thought i had a bargain for just £1500 with cambelt and water pump replaced at sale, however there seems to be a few issues with the vehicle and i was wondering or hoping that someone may be able to help.
originally the car was really struggling to pull away from junctions. had to really rev before the car would move away, and it stalled pulling away on a few occasions, i replaced the the oil, oil filter, (both looked like they hadn't been changed for a while) as well as the air filter, which was the worst ive seen in any car ive owned, now the galaxy performs great and easily pull away from junctions with next to no revs

first, the battery light is on, and the obd scan shows DTC P163287 (smart charge fault) ive checked the voltage across the battery and it gives me a constant 12.45v with engine off, with engine running it jumps to around 13.5v and with all consumers on (headlights front/rear fog lamps, a/c, front/rear window heaters etc) it drops to around 12.3v (the car appears to run fine, no loss of electricals etc)
second, i have a total failure of the parking sensor system, when selecting reverse gear, there is a continuous beep emitted from the rear speaker with the sensor light on the dash flashing, ive tried to listen for a clicking noise from the sensors but have been unable to hear anything from any of the 8 sensors, ive disconected the multiplug at the rear of the sensor loom, and check continuity off all wires to all sensors and all apears to be ok from the plug to the 4 rear sensors, unable to check fron sensors due to access to the loom, (i could really do with these working as my wife hmmm,,, lets just say parking isnt her best trait lol)
third, after standing around idle for a few hours or overnight, the engine struggles to start, takes a couple of attempts before firing to life, once the car finally decides to wake up it emits a fair size cloud of black smoke from the exhaust.
forth the car FARTS after switching off the engine, ive never owned a car that can fart better than i can lol
ERROR CODES SHOWING WITH OBD SCAN
P163287
P003A16
P02E200
P003A17
P02E2