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
- $50 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
P2196 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1) Medium
The P2196 code means the oxygen sensor ahead of the catalytic converter on bank 1 reports a rich mixture all the time and never swings back and forth. Either the sensor is worn out and stuck, or the mixture really is rich and the sensor is reporting it correctly. The fuel trims tell you which of the two you are dealing with.