P0154O2 Sensor No Activity Detected (Bank 2, Sensor 1)
Bank 2 O2 sensor shows no activity.
Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
Sistema Afectado
Aire / Combustible · Inyección, MAF, MAP, O₂
Relacionado con la mezcla aire-combustible: sensores de flujo, presión, inyectores o bomba.
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Symptoms You Will Notice
What you may observe when this code appears
- Hard or no start
- Disconnected sensor
Possible Causes
The components or conditions that trigger this code
- 1Blown fuse
- 2Module failure
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Check the connections
- 2Replace the sensor
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Sensors + injectors
* Diagnosis only: $50–$150
Quick Info
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