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It is not really all that involved, but the instructions in the service manual actually take up 2 pages. I cannot post them here due to copyright issues, but if you think you really need them, you can visit my profile by clicking my profile picture below or click any of my ads on the FixYa site and sign up for my Pro Services Email support and I will be happy to get them to you.
Otherwise I can simply tell you that NORMAL driving for a day should get all of your OBD monitors to reset as long as it includes at least 3 minutes of highway driving (55 to 60 Mph).
If you have been having trouble getting the monitors to complete and your drive cycles have included this highway driving, then you most likely have a pending code in your system. You can find out what it is by scanning the computer system with a scanner that is able to display pending codes.
NOTE: Many generic OBD code readers cannot do this. Refer to the instructions/specifications for the code reader to check for this capability and/or how to use it.
Invest in an OBDII reader. They range in price from $20-$400 and can do anything from just read codes when the engine light goes on, to real time data. Intermitent engine lights are tough, so next time it goes on, you can hook up your reader and find out what it is right then and there. Even for future problems, you can keep your mechanic honest by knowing exactly what's wrong with the vehicle. Buying a code reader will pay for itself the first time you use it.
Prior to 1996, you will probably need a BMW code reader. For 1996 and later, any major parts store will have a code reader and will read out your codes for free. Your check engine light will have to be on to see codes that are set in memory. The light does not need to be on to see codes that are "maturing" or "pending."
P0146 pd means pending code
Pending codes and DTCs?
Posted on November 12, 2010 by fcrmaster
When reading codes from your vehicle the fault code reader may show them as pending codes or normal Diagnostic Trouble Codes (DTC).
Pending codes (also known as continuous monitor codes) will be registered when an intermittent fault occurs. If that fault does not happen again after x number of start/stop cycles, the ECU will erase the code from memory. If the fault is persistent it becomes a DTC.
If you have read pending codes it is advisable to check the codes again after a week or so. If there is no apparent problem with the vehicle it is safe to erase the codes too and check back. But always make a note of any fault codes with the date and mileage of a vehicle.
If the codes read include a DTC then you need to investigate further. This you can either do yourself or advise your garage. If, again, you don't see an apparent problem (depending n the severity of the code) with the vehicle you can note the codes down and erase them. Then check again after a week or a few days depending on how often the vehicle gets used. If a repair has been made (previous owner) the DTC may just not have been reset after the repair.
The other numbers behind the code 01/06 ,
02/06, 03/06 , 05/06 ,04/06
These don't mean anything . cheap code reader .
DTC P0140 HO2S Circuit Insufficient Activity Sensor 2
DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
DTC P0171 Fuel Trim System Lean Bank 1
DTC P0174 Fuel Trim System Lean Bank 2
Sorry but this is something you should take to a qualified repair shop that has a diagnostic tool that can view sensor scan data. Causes of lean condition trouble codes P0171 P0174 GM 5 3L