A flashing check engine light indicates a severe misfire that can potentially cause damage, so it's best to avoid driving. Check engine light started blinking on and off and the car was shaking more than normal Updating the rom in the ecu to the latest revision from subaru helps alleviate most false misfire issues
2017 Subaru Wrx Clutches Upgrades | SubiSpeed
This can be done through the stealership or opensource.
They replaced the spark plugs and coils, and the code keeps coming on whenever i'm driving over 50 mph on the highway, and the check engine light keeps flashing.
If your subaru wrx has p0300 and p0303 error codes, it’s best to diagnose why the third cylinder is misfiring and see if that will fix the p0303 code Try doing the swap test from the previous. P0303 blinking cel with pfeee factory 2.0l turbo powertrain (ej series factory 2.0l turbo) 01 forester at 2.5l check engine light came on flashing today, ran a code scanner code came back p303
Earlier in the year the harmonic balancer was loose and threw off the timing, got a.
