3 replies to this topic

[Caaine]

I bit of a background story:
I took my 99´ S80 T6 to the dealer for a generic tune-up and to try to figure out why the notification: " Emission system service required " displayed in my dash. The car also had a rough idle. They hooked it up to VADIS and then cleaned the throttle body.

After this visit the rough idle went away - but it feels like I am lacking some response and horsepower. The car just doesn´t perform as well, they told me it might get better after some driviing around to adjust the ECU. The indication came on screen 3 days later and hasn´t gone away since.

I´ve been trying to follow this up and they always end the conversation with a very open ended conclusion which I don´t like because I know the bill will be high enough to kill. I took the car to another shop which specializes in Volvos and they hooked it up to and OBDII reader without giving much information.

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So now - I do have a printout from the vadis computer which goes like:

CODE

ECM 261A Long-term fuel trim. Upper limit  ---  ECM 261A Long-term fuel trim, bank 1, Upper --- Symptom area 28  (appears twice)

ECM-271A Adaptive lambda control, bank 2. Upper limit...   ---  ECM 271A Long-term fuel trim, bank 2, Upper  /  Symptom area 28

ECM-272A Adaptive lambda control, bank 2. Bottom limit...   ---  ECM 271A Long-term fuel trim, bank 2, Lower  /  Symptom area 28

ECM-928C Control Module, communication problems, s...  ---  ECM 928C Communication, Central Electronic  /  Symptom area 28

CEM-6401 Rear left door unlocked. Signal too high ---  CEM 6A01 Door unlocked, left rear, Signal too... /  Symptom area 36

REM-4A33 Fuel gauge sensor. Signal too high /Signal m...   --- REM 4A33 Fuel level sensor, Signal too high  /  Symptom area 36

CEM-1A5B Communication with the steerring wheel mo.. --- CEM 1A5B Communication with SWM control  /  Symptom area 36

CCM-0003 Blower fan motor passenger compartment  ---  CCM 0003 Fan motor passenger compartment  /  Symptom area 87

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The guy at the second dealer with the OBDII said it was related to 3 faulty sensors - he wasn´t sure which ones as the reader didn´t give him enough information he said.

Some of these codes above are probably related to another problem the car had, the turn signal stick and steering wheel controls did not function, they stopped working during a very cold and wet day. The dealer fixed that, but it happened again just a few days ago. If you could tell me what to look for there, I would appreciate it. Don´t wanna go to the dealer for a fuse replacement or similar

Anways - really hoping that someone could help me out. Absolutely love my S80 and would really like to see my ride fully functional and working.

[Bay13]

My best guess without looking at the car warmed up on the VADIS cart is that you more than likely need O2 sensors both front ones. You could need a Mass air flow meter. You could have a air leak on the intake or the exhaust. I know not much help, but without looking at the car on the machine thats the best guessing I can do.

[starfish]

The 261A code and the rough idle are most likely air meter related. The 271A and 272A code most likely just more piling on to that 261A code too. The CEM codes could have been picked up when the codes were read out if the engine was running. I don't recall that CCM code off hand and will pass on guessing. I think you need to find a sharp Volvo Tech who knows how to fix it right with out shotgunning. My best guess is you need a MAF meter and probably upgrades in software for the ECM, CEM and SWM. Your 2 front and 2 rear O2 sensor values need to be monitored for proper operation before replacing. How many miles/km have you on this car anyway?

[Caaine]

Thanks for the replies, all info helps.

The car has 117k miles on it...