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 $200
- 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
P1134 O2 Sensor Transition Time Ratio (GM, Bank 1 Sensor 1) Medium
On General Motors (Chevrolet, GMC, Buick, Cadillac), the P1134 code points to the O2 sensor transition time ratio (bank 1 sensor 1). Fuel use runs slightly higher. A tired sensor or an exhaust leak is the usual cause.