Tumble Generator Valve 1 RH Position Sensor High
2012-2016 Subaru Impreza 2.0L H4 🇨🇦
Description
The PCM has detected a high-voltage condition on the Tumble Generator Valve 1 right-hand position sensor circuit, indicating a possible open circuit or short to reference voltage on the right bank.
Symptoms
- Check Engine Light
- Minor fuel economy decrease
- Slightly higher emissions output
Common Causes
- Open circuit in TGV 1 RH sensor wiring
- Disconnected sensor
- Faulty sensor with high internal resistance
- Short to reference voltage
Diagnostic Steps
- Monitor TGV 1 RH sensor voltage on scan tool
- Inspect connector for secure connection
- Test wiring for opens or shorts to voltage
- Verify ground circuit
- Test sensor resistance
Repair Notes
Repair open wiring or replace the TGV position sensor.
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
P1089 on Other Vehicles
Common Questions
What does code P1089 mean on a 2012-2016 Subaru Impreza?
P1089 stands for "Tumble Generator Valve 1 RH Position Sensor High". The PCM has detected a high-voltage condition on the Tumble Generator Valve 1 right-hand position sensor circuit, indicating a possible open circuit or short to reference voltage on the right bank.
What are the symptoms of P1089 on a Subaru Impreza?
Common symptoms of P1089 include: Check Engine Light, Minor fuel economy decrease, Slightly higher emissions output.
What causes P1089 on a 2012-2016 Subaru Impreza?
Common causes of P1089 include: Open circuit in TGV 1 RH sensor wiring, Disconnected sensor, Faulty sensor with high internal resistance, Short to reference voltage.