Tumble Generator Valve Circuit 1 Open
2012-2016 Subaru Impreza 2.0L H4
Description
The PCM has detected an open circuit in the Tumble Generator Valve 1 actuator circuit on the right-hand bank. The actuator motor cannot be driven due to the break in the electrical path.
Symptoms
- Check Engine Light
- TGV 1 RH does not operate
- Minor efficiency and emissions impact
Common Causes
- Broken wire in TGV 1 actuator circuit
- Disconnected TGV actuator connector
- Corroded connector pins
- Faulty TGV actuator with open motor winding
- PCM driver circuit open
Diagnostic Steps
- Test TGV 1 actuator motor resistance
- Inspect actuator connector for disconnection or corrosion
- Check wiring continuity from PCM to actuator
- Verify PCM output signal
- Swap actuators between banks to isolate fault
Repair Notes
Repair the open circuit in the TGV actuator wiring or replace the actuator if the motor winding is open.
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
P1094 on Other Vehicles
Common Questions
What does code P1094 mean on a 2012-2016 Subaru Impreza?
P1094 stands for "Tumble Generator Valve Circuit 1 Open". The PCM has detected an open circuit in the Tumble Generator Valve 1 actuator circuit on the right-hand bank. The actuator motor cannot be driven due to the break in the electrical path.
What are the symptoms of P1094 on a Subaru Impreza?
Common symptoms of P1094 include: Check Engine Light, TGV 1 RH does not operate, Minor efficiency and emissions impact.
What causes P1094 on a 2012-2016 Subaru Impreza?
Common causes of P1094 include: Broken wire in TGV 1 actuator circuit, Disconnected TGV actuator connector, Corroded connector pins, Faulty TGV actuator with open motor winding, PCM driver circuit open.