What this code means

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

1. Command TGV 2 open and check response
2. Inspect LH TGV for obstructions
3. Test actuator motor operation
4. Check shaft for seizure
5. Inspect actuator wiring

Repair notes

Clean the LH TGV or replace the actuator assembly if mechanically failed.

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