What causes P1154 on a Honda?

Faulty oxygen sensor Oxygen sensor harness is open or shorted Oxygen sensor circuit poor electrical connection Extreme rich or lean air/fuel ratio Air leak in the exhaust near the oxygen sensor

How do I fix P1154 on a Honda?

Confirm the code with a scan tool and check fuel trim data Inspect the sensor and its connector for corrosion, moisture, and loose pins Check for exhaust leaks near the sensor Test the sensor response against the factory spec Replace the sensor if it fails testing, then clear codes and retest

P1154 The powertrain control module saw the bank 2 sensor 1 oxygen sensor respond too slowly

Q: What does P1154 mean on a Honda?

P1154. The powertrain control module saw the bank 2 sensor 1 oxygen sensor respond too slowly. The sensor may lag real changes in exhaust oxygen and fuel trim can drift.. Applies to Honda and Acura models that use this code.

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: Honda and Acura models that use this code

What does P1154 mean on a Honda?

P1154. The powertrain control module saw the bank 2 sensor 1 oxygen sensor respond too slowly. The sensor may lag real changes in exhaust oxygen and fuel trim can drift.. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of P1154

Faulty oxygen sensor
Oxygen sensor harness is open or shorted
Oxygen sensor circuit poor electrical connection
Extreme rich or lean air/fuel ratio
Air leak in the exhaust near the oxygen sensor

How to fix P1154

Confirm the code with a scan tool and check fuel trim data
Inspect the sensor and its connector for corrosion, moisture, and loose pins
Check for exhaust leaks near the sensor
Test the sensor response against the factory spec
Replace the sensor if it fails testing, then clear codes and retest

Sources and review

Checked against two independent sources.
Last updated 2026-10-02.