P12A1 - Fuel Rail Pressure Sensor Inappropriately Low

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

  • Faulty Fuel Rail Pressure Sensor
  • Fuel Rail Pressure Sensor harness is open or shorted
  • Fuel Rail Pressure Sensor circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P12a1 Description

The Engine Control Module (ECM) monitors the Fuel Rail Pressure Sensor. The ECM sets the OBDII code when the Fuel Rail Pressure Sensor is not to factory specifications.
OBDII Code P12a1 - Fuel Rail Pressure Sensor Inappropriately Low - AutoCodes.com

P12A1 Information for specific makes

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P12A1 Comments

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