Details On DTCs

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0089:00 (PCM, SKYACTIV-G, US) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Spill valve control solenoid valve control circuit range/performance problem
Detection condition	Determination conditions	If any of the following conditions is met under condition A or condition B: Condition A: The average fuel pressure on the high pressure side, measured by the fuel pressure sensor, exceeds the specified value. Condition B: The fuel pressure decreases to the specification or less instantaneously after the fuel pressure on the high pressure side measured by the fuel pressure sensor exceeds the specification.
	Preconditions	Condition A: Engine speed: 500 rpm or more^1 The fuel injection amount cumulative value after engine start is the specification or more. The following DTCs are not detected: Fuel pressure sensor: P0087:00, P0088:00, P0192:00 and P0193:00 High pressure fuel pump: P0091:00 and P0092:00 Condition B: While engine is running Fuel pressure sensor output voltage: 0.51-4.87 V^1 The following DTCs are not detected: Fuel pressure sensor: P0192:00 and P0193:00 High pressure fuel pump: P0091:00 and P0092:00 ^*1 : Standard can be verified by displaying PIDs using M-MDS
	Malfunction determination period	Condition A: 2 s period Condition B: Not applicable
	Drive cycle	1
	Self test type	CMDTC self test, KOER self test
	Sensor used	Fuel pressure sensor
Fail-safe function	Limits intake air amount Stops high pressure fuel pump control. The upper limit of the engine speed is 2, 500 rpm. The lower limit of the engine speed is 1, 000 rpm.
Vehicle status when DTCs are output	Not applicable
Possible cause	High pressure fuel pump connector or terminals malfunction PCM connector or terminals malfunction Fuel pressure sensor malfunction High pressure fuel pump malfunction Spill valve control solenoid valve malfunction (built-into high pressure fuel pump) High pressure fuel pipe clogging Fuel distributor malfunction Fuel injector malfunction PCM malfunction