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2003 TOYOTA TACOMA
2.7L I4•RWD•AUTOMATIC•gas•3RZ-FE
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1066Torque2197Fluid17DTC3480Battery2Maintenance0Recalls5
P1200high severityPowertrain

Fuel Pump Relay Circuit

on 2003 Toyota Tacoma 2.7L I4 · RWD

What this code means

The ECM detected a malfunction in the fuel pump relay or fuel pump ECU circuit.

Symptoms

  • CEL
  • Hard starting
  • Stalling
  • Poor acceleration
  • No start

Common causes

  • Faulty fuel pump ECU
  • Open/short in relay harness
  • Failing fuel pump
  • Faulty ECM

Diagnostic steps

  1. Test fuel pressure
  2. Check relay operation
  3. Inspect wiring
  4. Test fuel pump current

Repair notes

Replace fuel pump relay or ECU.

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