Subaru P1121: Starter Circuit Switch High Input
Is your scanner showing Subaru P1121?
No worries. We'll show you what it means and how to deal with it.
Subaru P1121: Starter Circuit Switch High Input
OVERVIEWWhat Does The Subaru P1121 Code Mean?
Engine started, vehicle driven to a speed of over 3 mph, and the PCM detected an unexpected “low” voltage condition on the A/T Neutral Position switch circuit during the CCM test.
How Can You Fix The Subaru P1121 Code?
- Check transmission type (manual transaxle)
- Check input signal of ECM
- Check poor contact
- Check neutral position sensor
- Check harness between ECM and sensor connector
- Check any other DTC on display
- Check harness between ECM and transmission
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
Subaru Impreza Repair Manual for P1121 – Pages 588-593.
