Possible causes

– Faulty EVAP canister purge valve
– EVAP canister purge valve harness circuit open or shorted
– EVAP canister purge valve electrical connection

When is the code detected?

The P1001 code is triggered when the ECM has detected an open circuit or short to ground on the EVAP canister purge valve.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1001 SAAB Description

The Engine Control Module (ECM) monitors the Evaporative Emission (EVAP) canister purge valve for open or short circuit.