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P0627

Fuel Pump A Control Circuit/Open

2007-2007 Cadillac CTS 3.2L V6

High SeverityPowertrainGeneric (SAE)

The 2007 Cadillac CTS is equipped with a 3.2L V6 engine. Below you'll find detailed p0627 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

Open circuit in fuel pump control circuit.

Symptoms

  • No start
  • No fuel pump prime sound
  • Stalling

Common Causes

  • Fuel pump relay failure
  • Wiring open
  • PCM driver failure
  • Inertia switch tripped

Diagnostic Steps

  1. Check fuel pump relay
  2. Test wiring
  3. Check inertia switch
  4. Test PCM output

Repair Notes

Replace relay or repair wiring.

Related Codes

P0230Fuel Pump Primary Circuit MalfunctionP0628Fuel Pump A Control Circuit LowP0629Fuel Pump A Control Circuit High

Other Powertrain Codes

P0627 on Other Vehicles

Common Questions

What does code P0627 mean on a 2007-2007 Cadillac CTS?

P0627 stands for "Fuel Pump A Control Circuit/Open". Open circuit in fuel pump control circuit.

What are the symptoms of P0627 on a Cadillac CTS?

Common symptoms of P0627 include: No start, No fuel pump prime sound, Stalling.

What causes P0627 on a 2007-2007 Cadillac CTS?

Common causes of P0627 include: Fuel pump relay failure, Wiring open, PCM driver failure, Inertia switch tripped.

Last updated: March 2026

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