Code 61 during colder outside temp

[S.hafsmo]

What he said,

As stated in the FSM write-up, IF the secondaries are commanded CLOSED, but the VACUUM SENSOR detects vacuum when it shouldn't. (B/c the SOLENOID vacuum switch is suppose to be blocking vacuum from the SENSOR and the SPT actuators when the SPTs are commanded CLOSED.)

And, b/c you have a 90, you can disconnect the vacuum line from the VACUUM SENSOR which is easily accessible directly under the ECM. NO plenum removal required.

This hose coming to the sensor below the ECM (and its connected components) should be ventilated to atmosphere through the solenoid below the plenum as long as the secondaries are not activated. If the problem still persists, I'm just about certain that the fault must be on the electrical side of the system.
Note, if the secondaries are activated while the hose is of, it will throw Code 61, as the sensor will not register vacuum when it's supposed to.