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P0628

P0628 - Fuel Pump A Control Circuit Low

Bosch · OBD1000

What does P0628 mean?

This code means the fuel pump 'A' control circuit has a low voltage reading, commonly indicating a short to ground.

Common Causes

  • Short to ground in the fuel pump control circuit
  • Faulty fuel pump relay
  • Wiring damage

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect wiring for any ground connections in the fuel pump circuit.

  2. 2

    Test the fuel pump relay for shorts.

  3. 3

    Ensure all connections are clean and tight.

  4. 4

    Professional diagnosis is recommended.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

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Source: OBD1000
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