1999 9-3 Code P0340 solution - SaabCentral Forums
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Old 6th August 2012
tshuey tshuey is offline
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Default 1999 9-3 Code P0340 solution

Saab check engine light came on during a weekend trip. Car runs great with no noticeable drop off in performance. Had our local parts place pull the code and it threw P0340 (Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor) They also gave me a list of reported fixes.
Ignition Module
Ignition Cassette
Spark plugs
Programmed Trionic Control module Software
Throttle body

Besides checking the spark plugs what are my next steps in diagnosing this fault. Like I said the car seems to be running fine, gas mileage on the trip was 28 mpg.
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Old 6th August 2012
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Saabohème Saabohème is offline
 
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Quote:
Originally Posted by tshuey View Post
Saab check engine light came on during a weekend trip. Car runs great with no noticeable drop off in performance. Had our local parts place pull the code and it threw P0340 (Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor) They also gave me a list of reported fixes.
Ignition Module
Ignition Cassette
Spark plugs
Programmed Trionic Control module Software
Throttle body

Besides checking the spark plugs what are my next steps in diagnosing this fault. Like I said the car seems to be running fine, gas mileage on the trip was 28 mpg.
Well the first two are the same. The IDM, Ignition Duischarge Module, (Saab's preferred term for it in their TSBs) is aka the DIC (Direct Ignition Cassette). Spark plugs are directly related being the very next electrical ignition component in the chain. As you have correctly already stated, ALWAYS go there first and clean and regap to just under 1 mm and see if the fault clears and does not recur. They are so WAY cheaper than the IDM/DIC. The Trionic ECU is the very last thing to suspect and look at. Its failure rate is way lower than all the others on the list. The T7 throttle body is a well known POS problem. However, its failure is most commonly characterized by it locking itself into the dreaded "limp home mode."
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Old 6th August 2012
tshuey tshuey is offline
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Will check spark plugs and regap to .09 mm is that correct? Thanks for the quick reply.
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Old 7th August 2012
TexasSaab93 TexasSaab93 is offline
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Best of luck with the spark plugs...but this code is almost always associated with a DIC on its way out. That being said I have gone 25k miles on my DIC ever since it started throwing that code. I have a spare in the back that throws the same code but the car runs great with either one.
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Old 7th August 2012
BobSaabit BobSaabit is online now
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Ur headed in the right direction. Replace plugs with NGK copper, regap. See if it clears up. If not, DIC is next.
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Old 7th August 2012
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A few weeks ago mine thew the code twice and hasn't thrown it again since.
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Old 3rd September 2012
tshuey tshuey is offline
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So I replaced the spark plugs with no change in check engine lite. The consensus on the Forum is the DIC is on its last leg but no one knows how long that may be. So the only solution is to buy a spare and carry it around with you? Is this the best we have to offer for a solution?
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Old 3rd September 2012
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Quote:
Originally Posted by tshuey View Post
So I replaced the spark plugs with no change in check engine lite. The consensus on the Forum is the DIC is on its last leg but no one knows how long that may be. So the only solution is to buy a spare and carry it around with you? Is this the best we have to offer for a solution?
On a turbocharged Saab, the plugs (RESISTOR, copper) must be changed every 30,000 miles (I believe), some will change them even more often,,,best NOT to wait until the CEL is aglow.
Yes, I know of no better solution...these things can die at the snap of ones fingers..
At 90K, I'd renew....keep the old as a spare...performance has its price....high performance has a higher price.
Being stranded/towing are the other options.
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