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Volkswagen check engine light may turn on, and fault code P2294 - Fuel Pressure Regulator B Control Circuit Open may be active or present. 

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P2294 code is caused due to a bad fuel pressure regulator, loose connector, or damaged wire harness. 

How to Replace a Fuel Pressure Regulator on a Volkswagen Jetta.

  1. Park the vehicle in a safe and secure location.
  2. Let the vehicle cool down for at least a few hours before working in the engine bay to avoid burning yourself.
  3. Pull the hood release under the driver-side dashboard.
  4. Open the hood at the front of the vehicle and secure the hood with a prop rod or hydraulic struts.
  5. Use a scanner to check and read any fault codes that may be present related to the Fuel Pressure Regulator.
  6. Remove the Air Filter Housing by disconnecting the two clamps and the one hose connected.
  7. Repair or replace the sensor.
  8. Reinstall in reverse order.

Do not work on the fuel system if the engine is still hot or warm. Fuel may leak and can catch on fire if the engine is still warm.