Engine-Codes - Subaru - P1091 SUBARU

P1091 SUBARU Code - Tumble Generated Valve System 1 Valve Close

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P1091 SUBARU code possible causes

  • Faulty Tumble Generator
  • Tumble Generator harness is open or shorted
  • Tumble Generator circuit poor electrical connection

|How is the P1091 SUBARU code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P1091 SUBARU code

Labor: 1.0

The cost to diagnose the P1091 SUBARU code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P1091 SUBARU code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is P1091 SUBARU code meaning?

The tumble generator system uses an electronically controlled butterfly valve in each intake runner port.
At cold idle, the tumble generator system will redirect the air charge through a different port. These ports have a finish characteristic that causes the air/fuel mixture to swirl and tumble greatly and create better combustion. This results in greater idle quality, cleaner emissions, and easier cold-starts.
Once the vehicle warms up, the tumble generator system will be deactivated and the intake air charge will be directed through the standard intake ports.
The Diagnostic Trouble Code (DTC) will set when the tumble generator valve is detected closed when the desired position is open.

|Need more information with the P1091 SUBARU code?

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|Need help with a P1091 SUBARU code?

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