Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $40 to $300
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P0557 Brake Booster Pressure Sensor Circuit Low High
The P0557 code means the brake booster pressure sensor signal is below its minimum value. The main risk is a possible loss of brake assist. It usually comes from the signal wire shorted to ground or from a missing reference voltage.