![]() However if for some reason this seems impossible then we have the possibility to delete this specific DTC permanently. Of course we always advise to mechanically solve this issue. This article is strictly informational and the specific technical data and service bulletins for your vehicle should always take precedence. Hopefully, the information in this article has been helpful to point you in the right direction to correct the problem with your brake booster pressure sensor trouble code. Replacing a faulty brake booster pressure sensor. ![]() Resistance or no continuity is an indication of faulty wiring or connectors that are shorted or open and must be repaired or replaced. Continuity tests are always performed with the power removed from the circuit and the normal readings should be 0 ohms of resistance unless otherwise specified by the technical data. If this process identifies the absence of a power source or ground, continuity testing may be needed to check the condition of the wiring and connectors. The correct voltage input to a sensor with no output voltage is normally an indication of internal failure. Tech data should be referenced to obtain the correct voltage range for the Brake Booster Pressure Sensor and the appropriate trouble shooting sequence. Voltage requirements will vary based on the specific vehicle, the Brake Booster Pressure Sensor Circuit configuration and the components incorporated. Voltage requirements will very based of the specific year, make and model of the vehicle. These procedures require a digital multi meter and the specific technical references for the vehicle. The advanced steps become very vehicle specific and require the appropriate advanced equipment to perform accurately. Vacuum lines should be inspected for security, weather cracks, leaks and the overall serviceability level. The connectors should also be examined for corrosion build up or damaged pins. Once these components are located, a thorough visual inspection should be conducted to check all of the associated wiring and connectors for obvious defects such as scraping, rubbing, bare wires or burn spots. This will include the brake booster pressure sensor, the brake booster, vacuum lines, wiring, connectors and the PCM on a simplex system. Locate all of the components associated with the Brake Booster Pressure Sensor Circuit. ![]() The first step in the troubleshooting process for any malfunction is to research the Technical Service Bulletins for known issues with the specific vehicle. What are some P0555 troubleshooting steps?
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