What does code P1200 mean on Lexus vehicles?
The ECU detects a fault in the fuel pump relay control or fuel pump ECU circuit.
OBD-II Code Lexus
P1200 — Lexus — Fuel Pump Relay/ECU Circuit Malfunction
The ECU detects a fault in the fuel pump relay control or fuel pump ECU circuit.
Common symptoms
- Hard starting
- engine stalling
- intermittent shutdown
Possible causes
- Faulty relay
- wiring issues
- ECU malfunction
Initial recommendation
Inspect fuel pump relay, wiring and power supply circuits.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Lexus code P1200 with your vehicle's actual symptoms for more complete diagnostic guidance.
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