What causes P1289 on a Honda?

Faulty Engine Oil Pressure (EOP) Sensor Engine Oil Pressure Sensor harness is open or shorted Engine Oil Pressure Sensor circuit poor electrical connection

How do I fix P1289 on a Honda?

Confirm the code with a scan tool and check engine oil level and condition first Inspect the switch connector and wiring for corrosion, moisture, and loose pins Test the switch circuit against the factory spec Check oil pressure and the oil pressure switch operation Replace the switch if it fails testing, then clear codes and retest

P1289 The powertrain control module saw the engine oil pressure sensor signal stuck high

Q: What does P1289 mean on a Honda?

P1289. The powertrain control module saw the engine oil pressure sensor signal stuck high. The module may report oil pressure that is not real and warn about a pressure problem.. Applies to Honda and Acura models that use this code.

Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: Honda and Acura models that use this code

What does P1289 mean on a Honda?

P1289. The powertrain control module saw the engine oil pressure sensor signal stuck high. The module may report oil pressure that is not real and warn about a pressure problem.. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of P1289

Faulty Engine Oil Pressure (EOP) Sensor
Engine Oil Pressure Sensor harness is open or shorted
Engine Oil Pressure Sensor circuit poor electrical connection

How to fix P1289

Confirm the code with a scan tool and check engine oil level and condition first
Inspect the switch connector and wiring for corrosion, moisture, and loose pins
Test the switch circuit against the factory spec
Check oil pressure and the oil pressure switch operation
Replace the switch if it fails testing, then clear codes and retest

Sources and review

Based on one independent source.
Last updated 2026-10-02.