P1154 – Infiniti DTC

Infiniti DTC P1154 – H02S Transition Time Ratio Bank 2 Sensor 1

DTC P1154 meaning on Infiniti

DTC P1154 refers to the “HO2S Transition Time Ratio Bank 2 Sensor 1” on Infiniti vehicles. This diagnostic trouble code indicates an issue with the transition time ratio of the oxygen sensor in Bank 2 Sensor 1.

Infiniti DTC P1154 symptoms

• Check Engine Light (CEL) illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

Infiniti DTC P1154 causes

• Malfunctioning Bank 2 Sensor 1 oxygen sensor
• Wiring or connector issues related to the oxygen sensor
• Exhaust system leaks
• Engine running rich or lean

Infiniti DTC P1154 seriousness

The seriousness of DTC P1154 on an Infiniti vehicle can vary. While it may not cause immediate engine failure, ignoring this code can lead to decreased fuel efficiency and potential long-term engine damage if left unresolved.

How to diagnose DTC P1154 on Infiniti

1. Use an OBD-II scanner to retrieve the specific trouble code
2. Inspect the Bank 2 Sensor 1 oxygen sensor for any physical damage
3. Check the wiring and connectors for any signs of wear or corrosion
4. Perform a visual inspection of the exhaust system for leaks

How to fix DTC P1154 on Infiniti

1. Replace the Bank 2 Sensor 1 oxygen sensor if faulty
2. Repair or replace any damaged wiring or connectors
3. Address any exhaust leaks in the system
4. Reset the Check Engine Light using an OBD-II scanner after repairs

How to erase DTC P1154 on Infiniti

1. Use an OBD-II scanner to clear the trouble code
2. Ensure that the underlying issue causing the DTC has been resolved
3. Perform a test drive to verify that the Check Engine Light does not reappear

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