What is the P0559 fault number? What is Brake Boost Pressure Sensing Circuit Intermittent Failure? How do I fix P0559 fault code What are the causes and symptoms of P0559 fault code?
What is the P0559 Fault code? What does it mean
One of the possible fault codes for the brake booster pressure sensor circuit is P0559. This code is an indication that the brake booster sensor circuit’s powertrain control module has detected a problem. Other fault codes that can be related to the brake booster pump pressure sensor include P0556 and P0557.
The brake booster pressure sensor circuit measures the pressure applied to hydraulic brake booster. The PCM controls the circuit to adjust to different braking conditions, assist with brake pedal operation, and adjust pressure. This is needed to stop the vehicle if the driver applies the least amount of force to it.
The pressure sensor transmits voltage signals to the PCM about vehicle acceleration when the driver presses down on the brake pedal. When the voltage signal doesn’t match the vehicle speed or is sent intermittently, the PCM will assign fault code P0559.
Vehicles susceptible to the P0559 fault code include but aren’t limited to various models of Citroen and Peugeot, Subaru, Chevrolet Mini, Suzuki, Renault Renault, Ford, Dodge, Chrysler, and Volkswagen.
What causes the P0559 Fault code?
These are the most common reasons that P0559 codes are triggered:
- – Pressure sensor for defective brake booster
- Leaky vacuum lines or tubing that is damaged or corroded
- – Corroded, loose, or damaged connectors
- – Short-circuited, damaged or faulty cables
- – Defective vacuum hose non-return valve
- – Defective brake booster
- – Defective PCM
What are the symptoms of P0559 Malfunction Code?
You may experience the following symptoms if your vehicle has the code P0559:
- – When you press the brake pedal, check engine light flashes or comes on continuously
- The brake warning light flashes or stays on when the brake pedal is pressed.
- To stop the vehicle from accelerating or stopping, it may be necessary to push the brake pedal harder
- – Most often, the brake pedal becomes more difficult and less responsive. It is also possible to have no sign of drivingability.
How to Fix the P0559 Fault Code
You can make the following repairs to fix the P0559 fault code:
- – Replacing the brake booster pressure sensor
- – Repairing or cleaning corrosion
- Repair or replacement of short-circuited, damaged wiring
- Repair of vacuum lines and hoses that are leaking
- Repairing a damaged brake booster
- – Check the PCM for damage and replace it if necessary
How Serious Is the P0559 Fault Code
When fault code P0559 has been set, the vehicle can still be driven. The vehicle’s brake performance will decrease, and it won’t operate efficiently. This can make driving more hazardous. It is important to address code P0559 immediately as brakes are one of the most critical safety features in a vehicle.
