2000 volvo s80 turbo code p0121

P0121 is normally a bad throttle position sensor - since you've already replaced it, check for damage in the wiring harness.

If you have a scan tool that can read the values, check to see what you get at the idle and WOT positions.

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cluster, engine, instrument, intermittent, s80, sputtering, stalling, volvo, T6 instrument cluster dies, engine sputter/stalls intermittently · jeffs80s. 11-06-2013 10:26 ...

Re: S80 sputtering, won't accelerate - Matthews Volvo Site

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Dec 15, 2010 - 2000 V70R Black, 129,000 miles (Wife's R, getting up there, she won't sell it)! ... The S80 T6 is "just because I could" and it's a fun drive! Top ... S80 T6 2000, codes
Jan 18, 2011
misfires and sputtering 1998 V70
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Sputtering And Dying, Please Help - Volvo Forum : Volvo Forums

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Jan 30, 2012 - 4 posts - ‎4 authors
i recently bought a 1999 volvo s80 t6 with 170,000 in august 2011, with "no ... itsputters and dies. i try to start again and it wont. so i disconnect the battery for ... I have a 2000 S80 2.9 and have replaced the TCM and the ABS ... Urgent Transmission Service S80 2000
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Jul 23, 2011
On My Second New Maf And Still Problems
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Apr 2, 2006
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My 2001 S80 was doing the same thing. I took it to the local Volvo dealer and they did a software upgrade at no charge. Purrs like a kitten now.

have the mechanics checked the egr valve and the vacuum lines and hoses. like vac leaks, n75 bad, vnt sticking, intake sooted, egr passing, and sooted up exhaust turbine. Bad Maf (Oxygen Sensor)
Leak in the vacuum system
Faulty N75
Bad actuator
Dirty gummed up turbo causing variable vanes to jam or stick

it can be any of above symtoms. hope this steers you in the right way. have a good day !!

Limp Mode - These cars are designed to protect themselves from engine damage. If the engine boosts too much, or the engine does not get enough fuel it will go into a limp mode where boost is limited to protect the engine. It limits boost by controlling a solenoid on the wastegate line (N75), by closing the electronic throttle or by opening the DV valve. If you are experiencing a limp mode the best thing to do is get the car scanned for codes and to see what is wrong. Look at fuel trims for signs of running lean, and to look for MAF problems, or O2 sensor problems. To look for potential boost problems log Block 115 and you can see the specified Vs actual boost. If you exceed the specified then there is a good chance that you will go into this limp mode. Stock specified is a max of 14 psi for a 2002+ car.MAF - Mass Air Flow Meter - is used to measure the air going into the engine. It is located on the outlet of the airbox, and housed in a cylindrical tube. The ECU reads the MAF signal, and injects fuel in proportion to the airflow. There are a few different ways the MAF can fail. The MAF can get coated with oil, and will not read properly. This is common if it happens right after installing a CAI, or a K&N filter. It can be cleaned out with 99% isopropyl alcohol, or a quality electronics cleaner. Remove the sensor from the housing and clean the sensor element.
MAF sensors also go bad due to too much airflow. On a car with a larger turbo the airflow is so high that the MAF element will get burned out from the excess air flow. It is common to increase the size of the housing to prevent this (other modifications required).
To check for a BAD MAF the best way is with a VAG com. Block 002 show air mass from the sensor. At idle the air flow should be 2-4 grams/second. With a wide open throttle run to redline the reading should show up to 170 g/s on a chipped car. Look for jumpy readings in the MAF, which can indicate a problem. More details here: http://www.ross-tech.com/vag-com/cars/fuel-trim.html

if you suspect your MAF is bad, one way to test it is to unplug the MAF, often if the MAF is giving false readings and upsets the fueling. If you unplug it, the ECU will ignore the MAF and run off of baseline tables. Be careful, as a boost leak or a vacuum leak can be miss-diagnosed as a bad MAF, because they will throw off the readings on the MAF. (Air sneaks around the MAF).

could be the idle control sensor,or it's the tps going into limp mode,check both.












TIM......

The Volvo S80 did not come with a cummins engine

0237 is turbo/ super boost sensor a circuit malfunction
0236 is turbo/ super boost sensor a ckt range performance

replace fuel filter

Bad intake gasket will cause this