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?
- No, stop and have it checked
- Estimated cost
- $100 to $2,500
- 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
P0087 Fuel Rail/System Pressure Too Low High
The P0087 code means the computer commanded a specific fuel pressure and the rail sensor measured a clearly lower value. On common rail diesels it is a serious code: the engine can go into limp mode or not start at all, and behind it there is usually a clogged filter, a worn high pressure pump or injectors that return more fuel than they should.