Tumble Generator Valve 2 LH Stuck Closed
2012-2016 Subaru Impreza 2.0L H4 🇨🇦
Description
The PCM has detected that the Tumble Generator Valve 2 on the left-hand bank is stuck in the closed position. The valve cannot open when commanded, restricting airflow at higher engine loads.
Symptoms
- Check Engine Light
- Reduced power at higher loads
- Restricted breathing on left bank
- Minor performance reduction
Common Causes
- Carbon or debris jamming LH TGV closed
- LH TGV actuator motor failure
- Seized LH TGV shaft
- Broken actuator linkage
- Wiring fault to actuator
Diagnostic Steps
- Command TGV 2 open and check response
- Inspect LH TGV for obstructions
- Test actuator motor operation
- Check shaft for seizure
- Inspect actuator wiring
Repair Notes
Clean the LH TGV or replace the actuator assembly if mechanically 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
P1093 on Other Vehicles
Common Questions
What does code P1093 mean on a 2012-2016 Subaru Impreza?
P1093 stands for "Tumble Generator Valve 2 LH Stuck Closed". The PCM has detected that the Tumble Generator Valve 2 on the left-hand bank is stuck in the closed position. The valve cannot open when commanded, restricting airflow at higher engine loads.
What are the symptoms of P1093 on a Subaru Impreza?
Common symptoms of P1093 include: Check Engine Light, Reduced power at higher loads, Restricted breathing on left bank, Minor performance reduction.
What causes P1093 on a 2012-2016 Subaru Impreza?
Common causes of P1093 include: Carbon or debris jamming LH TGV closed, LH TGV actuator motor failure, Seized LH TGV shaft, Broken actuator linkage, Wiring fault to actuator.