DTC P06DB-00: Engine Oil Solenoid Valve No. 1 Control Circuit Low Input

P06DB: 00 (PCM (H3T)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Engine oil solenoid valve No. 1 control circuit low input
Detection condition	If the PCM detects that the engine oil solenoid valve No. 1 control voltage at the PCM terminal 2K is specified value or less with the following condition met, the PCM determines that the engine oil solenoid valve No. 1 circuit voltage is low. Precondition  Battery voltage: 8 V or more 0.5 s have elapsed after the ignition was switched ON (engine off or on) Engine oil solenoid valve No. 1 control duty value: 94% or less
Fail-safe	Restricts the upper limit of the engine speed. Restricts engine load.
Possible cause	Malfunction in wiring harness (including connector/terminal) between main relay and engine oil solenoid valve No. 1 (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Malfunction in wiring harness (including connector/terminal) between engine oil solenoid valve No. 1 and PCM (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .) Engine oil solenoid valve No. 1 malfunction (Refer to [ENGINE OIL SOLENOID VALVE INSPECTION ] in service information). PCM malfunction (Refer to [PCM REMOVAL/INSTALLATION ] in service information).
Repeatability verification procedure	Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the KOEO or KOER self test. (See DTC INSPECTION .)
Courtesy of MAZDA MOTORS CORP.
1	Battery
2	Main relay
3	Engine oil solenoid valve No. 1
4	PCM