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Discussion Starter #1
I always get a P0507 code after getting a car wash. This code is high idle but my idle is around 750-900rpm which I believe is normal. Code usually goes away after a short while but this time it has stuck around for a bit. Any ideas?
 

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Hi,
is this a LP or pre-LP Gallardo?
cheers,
john
 

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After you get the car washed try driving it 15 or 20 miles to dry everything out including wires and exposed sensors.
 

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What kind of "car wash"?

Hand-wash? Automated brush-wash? High-power jet-wash?

Could be water splashing on the alternator, or similar.

Try placing a plastic waterproof sheet across the whole engine bay, to keep out all water. Make sure the engine is 100% stone-cold, keep the key well away from the ignition-slot, and don't forget to remove the sheet after washing.
 

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Discussion Starter #6
This would be a hand wash at home and I place towels to cover up the engine bay vents next to the glass engine bay display on the rear so that no water gets in there. Sometimes I will drive it for 15-20 minutes sometimes I just wash and put it in the garage.
 

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Confirmed, All P05xx codes are related to "IDLE speed or Cruise control".
According to my manual (2007), beside the RPM it also says, TPSL (throttle position self learning)
 
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