Mazda Rx 8 Intake Manifold Tuning Valve. We stock these intake manifold runner valve brands for the mazda rx8: The test fails when the signal on the monitor pin is more or.

Jul 07, 2021 • mazda cars & trucks. We stock intake manifold runner valve parts for most mazda. A p0661 code will be stored in the car’s computer when the pcm or another control module notes that the voltage reading from the intake manifold tuning valve control circuit is lower than what it should be.