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
- $150 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
P2002 Diesel Particulate Filter Efficiency Below Threshold (Bank 1) High
The P2002 code means the computer has decided the diesel particulate filter is no longer trapping soot within the expected limits, or that its soot load is higher than allowed. Behind this code there is almost always a stop-and-go driving pattern that keeps regenerations from finishing, not a filter that was bad from the factory. You can drive with caution, but not for long.