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
- $150 to $1,500
- 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
P0251 Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector) High
The P0251 code means the system found that the fuel metering control on the diesel injection pump is not behaving the way it should. Before you blame the pump, which is the expensive repair, rule out a clogged filter, air in the lines and contaminated fuel, because they cause the same symptom.