C0231
Power Steering Fluid Pressure Low
1997-2000 BMW 528i E39 2.8L I6 🇬🇧
Moderate SeverityChassis
Description
The power steering fluid pressure is below the minimum required for adequate assist.
Symptoms
- Heavy steering especially at low speeds
- Whining noise from power steering pump
- Steering assist reduced
- Fluid foaming visible in reservoir
Common Causes
- Low power steering fluid
- Power steering pump wear
- Drive belt slipping
- Power steering hose restriction
- Air in power steering system
Diagnostic Steps
- Check fluid level and condition
- Inspect drive belt tension and condition
- Listen for pump cavitation noise
- Check all hoses for leaks or restrictions
- Bleed air from power steering system
Repair Notes
Repair leaks and fill fluid. Replace pump if worn. Bleed system of air.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0231 on Other Vehicles
Common Questions
What does code C0231 mean on a 1997-2000 BMW 528i E39?
C0231 stands for "Power Steering Fluid Pressure Low". The power steering fluid pressure is below the minimum required for adequate assist.
What are the symptoms of C0231 on a BMW 528i E39?
Common symptoms of C0231 include: Heavy steering especially at low speeds, Whining noise from power steering pump, Steering assist reduced, Fluid foaming visible in reservoir.
What causes C0231 on a 1997-2000 BMW 528i E39?
Common causes of C0231 include: Low power steering fluid, Power steering pump wear, Drive belt slipping, Power steering hose restriction, Air in power steering system.