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p0301 Code - Cylinder 1 misfire detected

vmi9d3

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Check engine light came on last night, P0301 from the reader at Autozone. Here is the definition Google gives me:
What Does Code P0301 Mean? P0301 definition: Cylinder 1 misfire detected. Diagnosis: A misfire can be caused by anything from faulty spark plugs to low engine compression.

Any one else have this issue on a 2018 G80 with 88700 miles?

What causes the P0301 code?​

  • Faulty spark plug in cylinder 1
  • No compression in cylinder 1
  • Damage or excessive wear of spark plug wires and/or coils
  • Damage or excessive wear of distributor cap (not applicable to all vehicles)
  • Damage or excessive wear of rotor button (not applicable to all vehicles)
  • Faulty fuel injector
  • Clogged EGR valves or tubes
  • Burned valves
  • Inaccurate ignition timing
  • Vacuum leaks
  • Low fuel (rare)
  • Leaking from head gasket
  • Cracked distributor cap
  • Faulty camshaft sensor
  • Faulty crankshaft sensor
  • Faulty mass air flow sensor
  • Faulty oxygen sensor
  • Faulty throttle position sensor
  • Faulty catalytic converter
  • Faulty powertrain control module
 
I'd clear it and see if it comes back.
 
Update: after the code was read the check engine light went off, but the code was still there once I had it at CarMax. I used CarMax because I bought a MaxCare plan when I bought the car.
They replaced all the spark plugs and the code went away. As the list I pasted in the OP shows, there are many other possibilities so I am hopeful the new plugs did the trick but I won't feel 100% until I get some more miles on it. But so far so good.
 
Will most likely need a direct injection fuel injector. Have replaced several. Misfires present at cold start only. Once the engine and fuel injector warm up, the injector flows properly and the misfire goes away. Was hard for us to track down. Once it happens enough times in succession the check engine light will come back on.
 
Will most likely need a direct injection fuel injector. Have replaced several. Misfires present at cold start only. Once the engine and fuel injector warm up, the injector flows properly and the misfire goes away. Was hard for us to track down. Once it happens enough times in succession the check engine light will come back on.
Good to know; hopefully it happens soon enough to be covered under CarMax repair warranty. Thanks for the info.
 
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I am going to apologize. Totally thought it was a GV80, not a G80. My previous comment can be ignored as it does not apply to your vehicle. The plugs should do it on the 3.8.
 
I am going to apologize. Totally thought it was a GV80, not a G80. My previous comment can be ignored as it does not apply to your vehicle. The plugs should do it on the 3.8.
No worries, thanks for the update.
 
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