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 $450
- 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
P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) Medium
The P0134 code means the computer sees no activity at all in the signal of the upstream oxygen sensor. The signal is not high or low, it is simply not there. The usual causes are an open circuit, a failed heater that keeps the sensor from warming up, or a worn-out sensor.