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
- Medium
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $20 to $600
- 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
P0174 System Too Lean (Bank 2) Medium
The P0174 code means the computer ran out of room to add fuel on bank 2 to make up for a lean mixture. It only exists on V and boxer engines. The key to the diagnosis is checking whether bank 1 is also affected, which separates a cause common to the whole engine from a local problem.