Symptoms of a P0551 trouble code may include:
- Brake pedal feels spongy or soft
- Increased stopping distance
- Vehicle pulls to one side when braking
- ABS warning light may be illuminated
Possible causes of a P0551 trouble code include:
- Faulty brake booster pressure sensor
- Vacuum leak in the brake booster line
- Damaged brake booster
- Electrical problems (shorts, opens, etc.)
If you are experiencing any of the symptoms listed above, it is important to have your vehicle inspected by a qualified technician. The technician will be able to diagnose the problem and make the necessary repairs.
Here are some additional tips for troubleshooting a P0551 trouble code:
- Check the brake booster pressure sensor for damage. The sensor is located on the brake booster, near the master cylinder. It is a small, black sensor with a single electrical connection. Check the sensor for any signs of damage, such as cracks or breaks. If the sensor is damaged, it will need to be replaced.
- Check the vacuum line that connects the brake booster to the engine. The vacuum line is a black rubber hose that runs from the brake booster to the engine's intake manifold. Check the hose for any cracks or leaks. If the hose is damaged, it will need to be replaced.
- Check the brake booster for damage. The brake booster is a large, round metal component that is located behind the brake master cylinder. Check the brake booster for any signs of damage, such as cracks or leaks. If the brake booster is damaged, it will need to be replaced.
If you are not comfortable performing these checks yourself, it is best to have your vehicle inspected by a qualified technician.
