2008 Subaru Forester Xt - P0304 Code, O2 Sensor? Sensor Assembly Oxygen Impreza 2012 2012

Author Dalbo 02 Jun 2026

Before you can even diagnose p0304 in your car, you need to find the fourth cylinder’s location 98 forester 2.5l p0301 cylinder 1 misfire detected p0302 cylinder 2 misfire detected p0304 cylinder 4 misfire detected p0325 knock sensor circuit malfunction p0400 exhaust gas. Inspect the intake manifold and vacuum lines for leaks, and repair or replace any damaged components

Oxygen sensor, front-Subaru Impreza, Forester, Legacy- naturally

2008 Subaru Forester Xt - P0304 Code, O2 Sensor? Sensor Assembly Oxygen Impreza 2012 2012

Clear the diagnostic trouble code from the vehicle's computer system after completing. Find all about what p0302 code means, its typical causes, and possible symptoms. Timing belt out of alignment

Loose or damaged air intake system parts

Damaged spark plug or spark plug wire. Discover the common causes of the p0304 diagnostic trouble code and learn how to troubleshoot a misfire in cylinder 4 of your engine. P0304 means cylinder 4 is misfiring — usually a bad spark plug or ignition coil Swapping the coil to another cylinder is the fastest way to confirm the cause before spending any money on parts.

New o2 sensors (the expensive oem one, and a cheap generic for the rear) were installed this summer, also the cheap advance auto spark plugs that were listed as for the vehicle, forget the. The p0304 code indicates a misfire in cylinder 4 Read on to learn its symptoms, possible causes, as well as how to diagnose and fix the underlying issue. I recently resolved my p00304 issue on my 2008 forester sports xt

P0304 Engine Code | Cylinder 4 Misfire Detected - FIXD

I had a slight hesitation during cold starts and at idle

My mileage was at around 147k miles The p0304 diagnostic trouble code is like an sos from your vehicle's brain—specifically pointing to a misfire happening in the fourth cylinder It means this little chamber isn’t pulling its. Have a 2001 forester s with a check engine light on

Code is p0304 (#4 cylinder misfire) Have changed spark plugs with factory ngk's and new wires Step by step diagnosis of this common problem This was a solution, vehicle kept running great without any problems afterwards.