C1284 - Oil Pressure Switch Fault

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Oil Pressure Switch
  • Oil Pressure Switch harness is open or shorted
  • Oil Pressure Switch circuit poor electrical connection

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1284 Description

The engine oil pressure switch is a normally open switch. When the oil pressure is within normal ranges, the engine oil pressure switch closes and sends a ground signal to the instrument cluster setting the oil pressure gauge to the normal or mid-range position. When the oil pressure is low, the engine oil pressure switch opens, removing the ground signal, and the instrument cluster commands the oil pressure gauge to the L (low) position.
OBDII Code C1284 - Oil Pressure Switch Fault - AutoCodes.com

C1284 Information for specific makes

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C1284 Comments

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