Subaru P1086: Tumble Generated Valve Position Sensor 2 Circuit Low

Is your scanner showing Subaru P1086?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Subaru P1086: Tumble Generated Valve Position Sensor 2 Circuit Low

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$75-$200
Can I Still Drive?
:
No

What Does The Subaru P1086 Code Mean?

Engine stalls. Erroneous idling. Poor driving performance.

What Are The Potential Causes Of The Subaru P1086 Code?

  • Using a scan tool, check current data
  • Check input signal for ECM
  • Check harness between ECM and tumble generator valve position sensor connector
  • Check poor contact

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Testing and Inspection for P1086 – 2004 FORESTER SERVICE MANUAL, pages 189-191.

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