P1200
Fuel Pump Relay Circuit
2002-2010 Lexus SC 430 4.3L V8 🇬🇧
High SeverityPowertrain
Description
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
- Test fuel pressure
- Check relay operation
- Inspect wiring
- Test fuel pump current
Repair Notes
Replace fuel pump relay or ECU.
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1200 on Other Vehicles
Common Questions
What does code P1200 mean on a 2002-2010 Lexus SC 430?
P1200 stands for "Fuel Pump Relay Circuit". The ECM detected a malfunction in the fuel pump relay or fuel pump ECU circuit.
What are the symptoms of P1200 on a Lexus SC 430?
Common symptoms of P1200 include: CEL, Hard starting, Stalling, Poor acceleration, No start.
What causes P1200 on a 2002-2010 Lexus SC 430?
Common causes of P1200 include: Faulty fuel pump ECU, Open/short in relay harness, Failing fuel pump, Faulty ECM.