Tumble Generator Valve 2 LH Stuck Open
1997-2001 Subaru Impreza 2.2L H4
Description
The PCM has detected that the Tumble Generator Valve 2 on the left-hand cylinder bank is stuck in the open position. This is the left bank counterpart of P1090.
Symptoms
- Check Engine Light
- Reduced low-load efficiency
- Slightly rough idle
- Higher emissions at idle
Common Causes
- Carbon buildup on LH TGV
- Failed LH TGV actuator
- Broken linkage on LH side
- LH TGV shaft binding
- LH actuator wiring fault
Diagnostic Steps
- Command TGV 2 closed and monitor position
- Inspect LH TGV valve for carbon
- Test LH TGV actuator motor
- Check LH linkage condition
- Test actuator circuit
Repair Notes
Clean carbon from the LH TGV; replace the actuator if the motor has failed.
Related Codes
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
P1092 on Other Vehicles
Common Questions
What does code P1092 mean on a 1997-2001 Subaru Impreza?
P1092 stands for "Tumble Generator Valve 2 LH Stuck Open". The PCM has detected that the Tumble Generator Valve 2 on the left-hand cylinder bank is stuck in the open position. This is the left bank counterpart of P1090.
What are the symptoms of P1092 on a Subaru Impreza?
Common symptoms of P1092 include: Check Engine Light, Reduced low-load efficiency, Slightly rough idle, Higher emissions at idle.
What causes P1092 on a 1997-2001 Subaru Impreza?
Common causes of P1092 include: Carbon buildup on LH TGV, Failed LH TGV actuator, Broken linkage on LH side, LH TGV shaft binding, LH actuator wiring fault.