P1087low severityPowertrain
Tumble Generator Valve 2 LH Position Sensor High
on 2017 Subaru Impreza 2.0L H4 · AWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1