P1200high severityPowertrain
Fuel Pump Relay Circuit
on 1997 Toyota 4Runner 3.0L V6 · 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
- Test fuel pressure
- Check relay operation
- Inspect wiring
- Test fuel pump current
Repair notes
Replace fuel pump relay or ECU.
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1