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From Loren at Renntech:
P0445 EVAP Canister Purge Valve – Short to B+/Short to Ground
Short circuit to B+
Short circuit to ground
– Wiring harness
– DME control module
P0446 EVAP Canister Shutoff Valve (Function) – Below Limit
– Purge air line blocked
– Flow resistance of EVAP canister too high
Sounds more like a wire harness/electrical issue for P0445.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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