P12A4 - Fuel Rail Pump Control Valve Stuck Closed

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

  • Faulty Fuel Rail Pump Control Valve
  • Fuel Rail Pump Control Valve harness is open or shorted
  • Fuel Rail Pump Control Valve circuit poor electrical connection

Possible symptoms

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

P12a4 Description

The Engine Control Module (ECM) monitors the Fuel Rail Pump Control Valve. The ECM sets the OBDII code when the Fuel Rail Pump Control Valve is not to factory specifications.
OBDII Code P12a4 - Fuel Rail Pump Control Valve Stuck Closed - AutoCodes.com

P12A4 Information for specific makes

  • P12A4 AUDI Fuel Rail Pump Control Valve Stuck Closed
  • P12A4 BMW Absolute Pressure Sensor Intake Manifold Plausibility Intake Manifold Pressure Too Low
  • P12A4 MINI Absolute Pressure Sensor Intake Manifold Plausibility Intake Manifold Pressure Too Low
  • P12A4 PORSCHE Fuel Rail Pump Control Valve Stuck Closed
  • P12A4 VOLKSWAGEN Fuel Rail Pump Control Valve Stuck Closed

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Related Information

P12A4 Comments

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