During engine idling | Low at all ranges (P, R, N, D) | The hydraulic pressure delivery system or the oil pump may be faulty | | Replace the transaxle assembly |
- Damaged oil pump chain and sprocket
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- Defective pressure regulator valve, or deteriorated spring
| Replace the valve body assembly |
- Leaks in the hydraulic pressure circuit ranging from the oil strainer via the oil pump to the pressure regulator valve
| Replace the transaxle assembly |
- The engine idling speed is low
| Check the engine system, and repair or replace if necessary |
Low at certain range(s) only | Oil leaks may be present in the device or circuit relating to that range | Replace the transaxle assembly |
High | Sensor(s) or the pressure adjusting function may be faulty | - Malfunction of the accelerator pedal position sensor
| Check the accelerator pedal position sensor, and repair or replace if necessary |
- Malfunction of the oil pressure sensor
| Replace the valve body assembly |
- Malfunction of the line pressure solenoid valve (stuck OFF, open circuit or short circuit)
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- Malfunction of the pressure regulator valve
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