Subaru OBD-II 1996 & Newer models DTC P1090 – Tumble generator valve #1 (RH) malfunction (stuck open)
DTC P1090 meaning on Subaru OBD-II 1996 & Newer models
DTC P1090 indicates a malfunction related to the Tumble Generator Valve #1 (RH) on Subaru vehicles equipped with OBD-II systems from 1996 onwards.
Subaru OBD-II 1996 & Newer models DTC P1090 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Decreased engine performance
- Reduced fuel efficiency
Subaru OBD-II 1996 & Newer models DTC P1090 causes
- Tumble Generator Valve #1 (RH) stuck in the open position
- Electrical or wiring issues related to the Tumble Generator Valve
- Faulty Tumble Generator Valve #1 (RH)
Subaru OBD-II 1996 & Newer models DTC P1090 seriousness
The seriousness of DTC P1090 lies in the potential impact on engine performance and fuel efficiency. Ignoring this issue can lead to further damage to engine components over time.
How to diagnose DTC P1090 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to retrieve the specific fault code (P1090)
- Inspect the Tumble Generator Valve #1 (RH) for any physical obstructions or signs of damage
- Check the wiring and connections related to the Tumble Generator Valve for any issues
How to fix DTC P1090 on Subaru OBD-II 1996 & Newer models
- Clean or replace the Tumble Generator Valve #1 (RH) if stuck open
- Repair any damaged wiring or connections associated with the Tumble Generator Valve
- Reset the Check Engine Light after addressing the underlying issue
How to erase DTC P1090 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to clear the fault code (P1090) from the vehicle’s memory
- Ensure that the underlying issue causing the fault code has been resolved before clearing it