P1200 Fuel Pump Relay Circuit Malfunction
What does P1200 mean on a Toyota?
P1200 — Fuel Pump Relay Circuit Malfunction. This Toyota-enhanced code applies to Camry, Corolla, RAV4, Tacoma.
Common causes of P1200
- Failed fuel pump relay (often the integration relay)
- Open relay control circuit
- Blown fuel pump fuse
- Corroded relay socket
- ECM driver fault
How to fix P1200
- Swap the fuel pump relay with an identical known-good relay
- Check the fuel pump fuse
- Verify relay command with a scanner
- Listen for pump prime at key-on
- Replace the relay or repair the circuit