Fuel Pump Module B Control Circuit High

Common symptoms

What you'll notice

• Check the fuel pump module for any loose connections or damaged wiring.
• Inspect the fuel pump relay and replace if necessary.
• Test and replace the fuel pump if it is not functioning properly.
• Check for any clogged fuel filters and replace if needed.
• Have the fuel pressure sensor tested and replace if it is faulty.

Common causes

Most likely first

1. Malfunctioning fuel pump module
2. Wiring issue or short circuit in the fuel pump module control circuit
3. Faulty fuel pump relay
4. Problem with the engine control module (ECM) or powertrain control module (PCM)
5. Incorrect fuel pressure or fuel volume

How to diagnose & fix

Work through it in order

1. Engine misfires or stalls while driving
2. Difficulty starting the vehicle
3. Decreased fuel efficiency
4. Poor engine performance or lack of power
5. Illumination of the check engine light