Check Engine Code
P2195
O2 Sensor Signal Stuck Lean (Bank 1, Sensor 1)
Severity: medium
DIY difficulty: 2/5
Typical cost: $30–$500
What P2195 means
The upstream O2 sensor has reported a stuck-lean signal long enough to set a code — often an actual lean condition, not a sensor fault.
Symptoms
- CEL
- Rough running
- Poor fuel economy
Likely causes (most common first)
- Vacuum leak
- Low fuel pressure
- Exhaust leak near the sensor
- Failed O2 sensor
Can I keep driving?
Medium — drivable but fix soon
Typical repair cost
DIY fixes can start near $30 (parts only). Shop repairs for P2195 typically run up to $500 depending on the underlying cause and vehicle. Start with the most common cause — Vacuum leak — before throwing parts at it.
Recommended parts & tools for P2195
Our buyer’s guides cover the tools and parts that pair with AXLY:
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