engine light and 121 and 414 codes - Page 3

drsyn · Nov 17th, 2009, 07:06

I have a known good MAF coming today so I will try this. scouring the web it looks like it can only be MAF, MAP or a Vacuum line. I have checked the Vac lines so I am hoping the MAF is at fault or it will be a MAP sensor next. My MAF p/n' is as I stated, but it doesn't match any of the Bosch ones and it is hot etched into the plastic with bosch logo. Very odd, will let everyone know how if goes as it seems this is the time of year for rough running and the MAF playing up.

I have cleaned all the connectors to the MAF and MAP too so only the physical parts left them selves to be at fault I guess.

Tks

Chris_Rogers · Nov 17th, 2009, 17:38

On an 850 you either have a MAF or MAP sensor depending on the engine type not both.

drsyn · Nov 17th, 2009, 19:33

thanks for that Chris, anyway it is good news, I did find a sensor solenoid unde r the air intake which I took to be the MAP, whatever it was, I cleaned the contacts but no different, just fitted a MAF off ebay for £24 and it is running like a dream, cleared the codes and just been for a 5 mile drive and no problems, it accelerates and doesn't stall on throttle off, I can't say how pleased I am again.

re-fitted old MAF to check and it ran like a dog with no tick-over or power at all !

many thanks to everyone on this thread who has contributed !

julian

pillapow · Mar 23rd, 2012, 20:03

I have the dreaded 121 & 414 aswell.

Nov 17th, 2009, 07:06	#21
drsyn Junior Member Last Online: Dec 14th, 2009 11:20 Join Date: Mar 2008 Location: easttleigh	MAF or MAP or Vacuum I have a known good MAF coming today so I will try this. scouring the web it looks like it can only be MAF, MAP or a Vacuum line. I have checked the Vac lines so I am hoping the MAF is at fault or it will be a MAP sensor next. My MAF p/n' is as I stated, but it doesn't match any of the Bosch ones and it is hot etched into the plastic with bosch logo. Very odd, will let everyone know how if goes as it seems this is the time of year for rough running and the MAF playing up. I have cleaned all the connectors to the MAF and MAP too so only the physical parts left them selves to be at fault I guess. Tks

Nov 17th, 2009, 19:33	#23
drsyn Junior Member Last Online: Dec 14th, 2009 11:20 Join Date: Mar 2008 Location: easttleigh	hallelujah !!!!! thanks for that Chris, anyway it is good news, I did find a sensor solenoid unde r the air intake which I took to be the MAP, whatever it was, I cleaned the contacts but no different, just fitted a MAF off ebay for £24 and it is running like a dream, cleared the codes and just been for a 5 mile drive and no problems, it accelerates and doesn't stall on throttle off, I can't say how pleased I am again. re-fitted old MAF to check and it ran like a dog with no tick-over or power at all ! many thanks to everyone on this thread who has contributed ! julian

Mar 23rd, 2012, 20:03	#24
pillapow 05 V70 T5 G-tronic Last Online: Mar 15th, 2019 21:19 Join Date: Oct 2009 Location: NorthWest	I have the dreaded 121 & 414 aswell. __________________ - P2 V70 T5 G-tronic Ex-ARV - Volvos are great cars, sometimes.

Nov 17th, 2009, 17:38	#22
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	On an 850 you either have a MAF or MAP sensor depending on the engine type not both.

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