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, no immediate risk
- Estimated cost
- $50 to $400
- 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
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) Medium
The P0133 code means the oxygen sensor ahead of the catalytic converter still works, but takes longer than allowed to react to mixture changes. It is the classic symptom of aging: the sensor is not dead, it is slow, and that keeps the computer from correcting the fuel injection with precision.