P1097 – Subaru OBD-II 1996 & Newer models DTC

Subaru OBD-II 1996 & Newer models DTC P1097 – Tumble generator valve circuit #2 (over current)

DTC P1097 meaning on Subaru OBD-II 1996 & Newer models

DTC P1097 refers to the Tumble Generator Valve Circuit #2 (over current) on Subaru vehicles equipped with OBD-II systems from 1996 onwards.

Subaru OBD-II 1996 & Newer models DTC P1097 symptoms

  • Check Engine Light (CEL) illuminated on the dashboard
  • Reduced engine performance
  • Engine may run rough or stall

Subaru OBD-II 1996 & Newer models DTC P1097 causes

  • Faulty Tumble Generator Valve
  • Short circuit in the wiring related to the Tumble Generator Valve
  • Defective Engine Control Module (ECM)

Subaru OBD-II 1996 & Newer models DTC P1097 seriousness

The seriousness of DTC P1097 lies in the potential engine performance issues it can cause. Ignoring this code may lead to further damage to engine components.

How to diagnose DTC P1097 on Subaru OBD-II 1996 & Newer models

  • Use an OBD-II scanner to retrieve the fault code and check freeze frame data
  • Inspect the Tumble Generator Valve and related wiring for any visible damage
  • Check the ECM for any signs of malfunction

How to fix DTC P1097 on Subaru OBD-II 1996 & Newer models

  • Replace the faulty Tumble Generator Valve
  • Repair any short circuits in the wiring connected to the Tumble Generator Valve
  • If the ECM is faulty, consider replacing or reprogramming it

How to erase DTC P1097 on Subaru OBD-II 1996 & Newer models

  • Use an OBD-II scanner to clear the fault code after the underlying issue has been resolved
  • Ensure that the repair has been successful by checking for any recurring codes or symptoms

Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.