How to Diagnose P0301

14 owner reports3 diagnostic steps

DIY Diagnostic Checklist

Based on 14 owner reports

Progress0%

Step 1check: engine line

Step 2check: for leaks on all the injectors

Step 3test: fuel injector

Root Causesfor P0301

Based on 14 owner reports

Confirmed Causes

1
cylinder 1 misfire(7% of cases)
2
many threads about(7% of cases)
3
not a coil pack(7% of cases)
4
significantly warmer down there than where i live: \~70f vs \~30f(7% of cases)

Common Misdiagnoses

What owners initially thought vs. what actually fixed the problem

sure if this is the correct thinking or not,i decided to rule it out officially(1 reports)

What Didn't Help

Repairs that owners tried but didn't fix the issue

bad, you need to replace the o-rings on the top and bottomfix the problemgo awayignition coil packlike a logical place to start. unfortunately plugs and wiressure if this is the correct thinking or not

Things to Check

Suggested areas to investigate based on similar cases

engine linefor leaks on all the injectors

P0301

Cylinder 1 Misfire Detected

criticalView full code details →