Tumble Generator Valve 2 LH Position Sensor High
2012-2016 Subaru Impreza 2.0L H4
Description
The PCM has detected a high-voltage condition on the Tumble Generator Valve 2 left-hand position sensor circuit. This may indicate an open circuit or a short to the reference voltage.
Symptoms
- Check Engine Light
- Minor reduction in fuel economy
- Slightly higher emissions
Common Causes
- Open circuit in TGV position sensor wiring
- Disconnected sensor connector
- Faulty TGV position sensor
- Short to voltage in sensor circuit
Diagnostic Steps
- Check TGV 2 LH sensor voltage on scan tool (should not be near 5V reference)
- Inspect sensor connector for loose or missing connection
- Test wiring for open circuit or short to voltage
- Verify sensor ground circuit
- Replace sensor and retest
Repair Notes
Reconnect or replace the TGV position sensor; repair open wiring in the sensor circuit.
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
P1087 on Other Vehicles
Common Questions
What does code P1087 mean on a 2012-2016 Subaru Impreza?
P1087 stands for "Tumble Generator Valve 2 LH Position Sensor High". The PCM has detected a high-voltage condition on the Tumble Generator Valve 2 left-hand position sensor circuit. This may indicate an open circuit or a short to the reference voltage.
What are the symptoms of P1087 on a Subaru Impreza?
Common symptoms of P1087 include: Check Engine Light, Minor reduction in fuel economy, Slightly higher emissions.
What causes P1087 on a 2012-2016 Subaru Impreza?
Common causes of P1087 include: Open circuit in TGV position sensor wiring, Disconnected sensor connector, Faulty TGV position sensor, Short to voltage in sensor circuit.