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My 2000 S80 engine suddenly shuts down.

(2000 Volvo S80)
in Las Vegas, NV on April 10, 2011
It happens the 3rd times in the last 2 weeks. After driving the car for 45 minutes or more the engine stops and a message comes up on the left side of the dash "El.Power System Service Required"
After 15-30 minutes sitting on the side of the road it will start again and goes for another 20-30 min. and do it again. When it starts there is "0" message, no engine light on what so ever.
Any idea what could it be?
Displaying 1 answers & 5 comments
Popular Answer
In order to properly diagnostic this problem, you might want to bring in to a Volvo specialized repair facility with VIDA (Volvo's dealership scan tool). But it sounds like you have a pending diagnostic trouble code and your S80 has entered into a emergency limp home mode. By cycling your ignition key it temporary resets your limp home mode but the code is still there and urgently needs to be "fixed" Good luck, -Sam
on May 04, 2011
I did drive in to the Volvo dealer and Unfortunately they can not find any code. When the car is running it runs perfect and does not stores any code when it happens. The technician said it has to do it to test it, when I left it there they could not replicate it .
Okay, Does the engine crank very slowly after you sat 15-30 minutes? Then the next step is to check the electical chargign system since you say that the dealer wasn't able to retreieve DTC (diagnostic trouble codes) is try checking the alternator for a charging voltage under a proper carbon load see if the alternator has enough current (120-140amp under full load) and voltage (13.5-14.0volts ideal) to the engine and related systems. If that checks out okay, next step is to check the battery if it's retaining the charge properly. Most of the time a low charge battery or faulty alternator will not trigger a stored DTC on the onboard computers or even erases these vital diagnostic aids. Good luck, -Sam
on May 04, 2011
No, the engine cranks actually fast end normal. /my battery never got low even after several unsuccessful crank. They did check alternator and battery even I told them it is cranking normal, never slows down.
After I re-read your original post, the message EL. Power System Service Soon is electrical power system service soon, it means you have a charging system fault, since you said that they checked the alternator and battery and there are no soft DTC codes stored. The only other item on the list is in the area of the CEM (central electronic module), either the wire terminal connections to the CEM that makes a false reading for the true voltage and current or the module itself has a poor solder point and the heat (while driving) opens up causing the problem. There was one time I had a XC90 (similar engine to your S80) that had water "intrusion" through the cowling and water got on to the wire harness connection, corrosion does wanders with electricity. So with that said, this will require an experienced Volvo dealership or independent ship that handles intermittent CANbus related issues, day in day out. We would have to look at the S80 physically to properly diagnostic this sporadic issue. Best of luck, -Sam
on May 04, 2011
Thank you Sam,
I will try to pass on this info to the guys here in Canada, see if they can find somthing.
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