P1120moderate severityPowertrain
Secondary Throttle Position Sensor Circuit
on 2002 Infiniti QX4 3.3L V6 · RWD
What this code means
Fault in the secondary TPS circuit for additional airflow control.
Symptoms
- CEL
- Reduced power
- Erratic throttle
- Limp mode
Common causes
- Faulty secondary TPS
- Damaged wiring
- Contaminated throttle body
Diagnostic steps
- Test sensor voltage
- Inspect wiring
- Clean throttle body
- Compare to specs
Repair notes
Replace secondary TPS.
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