Hi, can anyone help? I have a PASM fault on my 2006 997 turbo, reverts to sport setting but is intermittent. I have fitted new battery but problem still there. Codes read F/N/S and F/O/S PASM valve failure, but can't see how both shocks would go at same time? I wondered if it could be the PASM ECU but don't want to start replacing stuff on the off chance it will work! Just wondered if anyone else had same issue and what was done to cure it? It first started after I drove the car over the rough track into Bicester Scramble last year. I put the car away for the winter, and when I started using again this spring it Returned.
PASM Failure
- Thread starter Lynwood
- Start date
STiG911
New member
I got this when I fitted a new battery two years ago - it does take a while driving around normally for the fault to clear (If you haven't you might need to reset your one-touch window stops, too) but if it doesn't, a friend with an ODB reader should be able to clear the fault codes. Of course, if they re-appear, you absolutely know you've got an issue...
Thanks for the reply, I was told it could be the battery so replaced it, but still have the fault. I'm going to take it for a decent run tonight to see if it resets? The garage cleared the codes, but fault returned. I will probably take it to another independent as not sure the one that serviced it have enough knowledge of the issue?
Hi Clive, I know it's a common problem, but there appears to be various reasons. I was hoping someone had the same issue and could point me in the right direction before I get it checked again. I won't name the garage but they were a Porsche ind specialist and you could just tell they were clueless. Ive had some bad experiences with main dealers previously and they charge top dollar for not always the best advise. I'm happy to spend the money to get it sorted, just don't want to spend on swopping things out when its not required.
Have you taken it for that "decent run" yet? If you have already Googled PASM failure you will have seen there are a multitude of reasons and suggested solutions ranging from loose wires ( quite possible with yours if you drive over bumpy ground) to flat batteries to faulty shocks and so on. The only time I have seen a PASM failure warning was on our GTS following a battery change which cleared itself after driving.
Kevin,
About a year into ownership of my Cayman I had a PASM fault - it went into Sport mode would you believe? Even with factory input it took the tech a day to locate the fault which turned out to be a pinched cable. I suspect that it happened during assembly, general vibration levels eventually causing the cable to open-circuit. Thankfully the car was under warranty otherwise I'd have been hit with a substantial bill for labour.!
It sounds as though your problem could be related to the PASM control module since it's unlikely, as you say, for two PASM control valves to have failed. You could try breaking and remaking the connections at the dampers to see if that clears the problem but otherwise I think you're going to have to get the problem checked-out on a PIWIS analyser for a rigorous analysis.
Good luck.!
Jeff
About a year into ownership of my Cayman I had a PASM fault - it went into Sport mode would you believe? Even with factory input it took the tech a day to locate the fault which turned out to be a pinched cable. I suspect that it happened during assembly, general vibration levels eventually causing the cable to open-circuit. Thankfully the car was under warranty otherwise I'd have been hit with a substantial bill for labour.!
It sounds as though your problem could be related to the PASM control module since it's unlikely, as you say, for two PASM control valves to have failed. You could try breaking and remaking the connections at the dampers to see if that clears the problem but otherwise I think you're going to have to get the problem checked-out on a PIWIS analyser for a rigorous analysis.
Good luck.!
Jeff
Drinky
New member
I have just purchased a 997.2, when I went to view the car the battery was dead, so they used the jump pack on the fuse board, which enabled the key fob to be used to open the boot, attached jump pack to the battery, with the ignition on, they then turned the steering lock to lock a couple of times and then drove the car a few miles and the message cleared. Good luck Carl
Lee997
New member
Encountered this very very problem today. I’ve been suffering from the slow starter issue and today refused to start with just the solenoid click. Fortunately after waiting 10-20 minutes and trying a few more times it started again and has restarted several times since, so knowing the problem is either starter motor or the electrical cable connector to it I decided to at least remove and clean the battery terminals and the positive terminal that goes through the front bulkhead by the battery! I connected another battery to the fuse panel red tag and went about removing the battery and positive post in the front. On restarting the car after the management light came on and a message informing me PASM failure. I cycled the ignition a few times but fault still there. I then took the car for a run and it cleared the fault by the time I reached the end of my road.
Hi, finally sorted the PASM issue, it was a faulty FNS shock. I had both replaced and 4 wheel alignment carried out by the Porsche Shop at Hartlebury nr Kidderminster. Very reasonable at £1320 inc VAT Nice people and good service. Car now feels much tighter and responsive now so happy days!
Lapisblue997
New member
Glad you fixed your problem.
FYI for anybody else with this issue I also had a PASM warning message on my 997.1 and it turned out to be a failed PASM control unit. I found a friend with the same car and borrowed his control unit. Its just under the glovebox and very easy to reach and unplug. Soon as I plugged it into min car the error went away so I knew immediately that was the issue and replaced my faulty one.
FYI for anybody else with this issue I also had a PASM warning message on my 997.1 and it turned out to be a failed PASM control unit. I found a friend with the same car and borrowed his control unit. Its just under the glovebox and very easy to reach and unplug. Soon as I plugged it into min car the error went away so I knew immediately that was the issue and replaced my faulty one.
Dear Porsche friends
I need some of you knowledge and expertise to resolve my issue.
I have a Porsche 997 C2s 2006, my front suspension(s) have been replaces with new ones supplied design911, just the standard suspension.
Issue I am having is the PASM fault keeps appearing on my dashboard even though the suspension have been changes. I get the message "000c, FL Shock absorber Valve" again and again. The car ride becomes stiffer and hard on the road.
The wheel alignment has "not" been done yet, not sure if this is causing the issue of PASM.
Any idea what it might be.
Your advice would be great.
Kind Regards
I need some of you knowledge and expertise to resolve my issue.
I have a Porsche 997 C2s 2006, my front suspension(s) have been replaces with new ones supplied design911, just the standard suspension.
Issue I am having is the PASM fault keeps appearing on my dashboard even though the suspension have been changes. I get the message "000c, FL Shock absorber Valve" again and again. The car ride becomes stiffer and hard on the road.
The wheel alignment has "not" been done yet, not sure if this is causing the issue of PASM.
Any idea what it might be.
Your advice would be great.
Kind Regards
From what you’re saying it’s not clear to me that you’ve had PASM dampers fitted … “just the standard suspension”???
If your car was fitted originally with PASM and if you’ve had non-active dampers fitted the system will be expecting an appropriate connection to be made and will throw-up error messages unless an appropriate terminator is used. On the other hand, if PASM dampers were fitted, were they Porsche approved items or aftermarket equivalents? There shouldn’t be any problems if they were a direct Porsche replacement, but if not then perhaps they have to be programmed via a suitable diagnostic analyser, PIWIS or equivalent? Maybe it’s just a case of a bad connection?
I think you need to provide more specific information.
I can’t see incorrect wheel alignment having any bearing on the problem.
Jeff
If your car was fitted originally with PASM and if you’ve had non-active dampers fitted the system will be expecting an appropriate connection to be made and will throw-up error messages unless an appropriate terminator is used. On the other hand, if PASM dampers were fitted, were they Porsche approved items or aftermarket equivalents? There shouldn’t be any problems if they were a direct Porsche replacement, but if not then perhaps they have to be programmed via a suitable diagnostic analyser, PIWIS or equivalent? Maybe it’s just a case of a bad connection?
I think you need to provide more specific information.
I can’t see incorrect wheel alignment having any bearing on the problem.
Jeff
Jeff, you know your stuff,
When I posted, after i went to my local which are quite highly recognised.
It's was dampers with PASM which was installed on the car.
However the garge found the fault, issue was bad connection between the damper and car cables. He cleaned both connections and I been driving around for 2 hours and didn't get a PASM message on dash board. Woohoo thank god.
Jeff you was spot on about the connection....Nice one. Thank you [
]
When I posted, after i went to my local which are quite highly recognised.
It's was dampers with PASM which was installed on the car.
However the garge found the fault, issue was bad connection between the damper and car cables. He cleaned both connections and I been driving around for 2 hours and didn't get a PASM message on dash board. Woohoo thank god.
Jeff you was spot on about the connection....Nice one. Thank you [
]
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