95 960 check engine code Topic is solved

[eurocar]

Hi everyone,
I need help with check engine codes on my 95 960SW
Got 212 232 221 codes.If I'm right 212 is O2 sensor ? and other two are related to the O2 sensor.
I'm trying to figure witch sensor I need,front or rear ?
Volvo dealer wasn't really helpful.
Also car is idling rough.That could be the same problem right ?
Also is there cheap source for Volvo parts ?
Thanks

[DiezelV]

Hi, If you can check make sure the o2 is working, I think you have only one, this is from my my fault tracing manual TP 2305201

232 - long term fuel trim - idle
221 - long term fuel trim - part load

Fault source-
O2 upper limit -

1. MAF sensor
2. Air leakage (intake)
3. Fault sensor signal

Lower limit-

1. MAF
2.High fuel pressure
3. leaking injecter valves
4. contaminated engine oil
5. oil level too high
6. fual sensor signal

Similer instance with a 95 960
http://www.brickboard.com/RWD/index.htm?id=827909

[csbrianp1]

I believe you only have one O2 sensor. If by chance you have two, disconect one of them, drive the car and check the codes again. I would replace the O2 sensor first then start fixing the other codes. The other codes are sympstoms codes. Which will disapear a soon as fix the problem. After the O2 sensor, start with the Mass Air Flow sensor.
Call Volvo salvage in California they will save you a bunch on it 916 635-9970.

Brian