Possible causes
– Faulty VTC Shutter valve actuator (Stuck open)
– Missconnecting or pull out the vacuum hose
– Faulty Variable tumble solenoid valve
– Variable tumble solenoid valve harness is open or shorted
– Variable tumble solenoid valve circuit poor electrical connection
– Missconnecting or pull out the vacuum hose
– Faulty Variable tumble solenoid valve
– Variable tumble solenoid valve harness is open or shorted
– Variable tumble solenoid valve circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2004 MAZDA Description
The Powertrain Control Module (PCM) monitors mass the variable tumble shutter valve using the variable tumble position sensor. If the PCM turn the variable tumble solenoid valve ON but the variable tumble position still remain open (the variable tumble position sensor OFF), the PCM determines that the variable tumble shutter valve has been stuck open.
MAZDA Technical Service Bulletins for P2004 code
2004 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:ENGINE
2004 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
2005 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:ENGINE
2005 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
2006 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:ENGINE
2006 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
2006 MAZDA MAZDA5 ENGINE AND ENGINE COOLING:ENGINE
2006 MAZDA MAZDA5 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
2007 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:ENGINE
2007 MAZDA MAZDA3 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE