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 $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
P2177 System Too Lean Off Idle (Bank 1) Medium
The P2177 code means the bank 1 mixture is too lean with the engine above idle, at part load. The computer reached its correction limit in that specific condition, which helps a lot when you are hunting for the cause. Think vacuum leak, a dirty MAF sensor or low fuel pressure.