P1401moderate severityPowertrain
Sub-Throttle Position Sensor Range/Performance
on 2009 Lexus GX 470 4.7L V8 · 4WD
What this code means
The sub-throttle position sensor signal is outside expected range.
Symptoms
- CEL
- Erratic throttle
- Reduced power
- Idle instability
Common causes
- Out-of-range sensor
- Contaminated throttle
- Wiring issues
- Mechanical binding
Diagnostic steps
- Test sensor range
- Clean throttle body
- Inspect wiring
- Check for binding
Repair notes
Replace sensor or clean throttle body.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1