12-03-2016, 09:57 AM | #1 |
Drives: ‘16 1SS & ‘19 1LT Join Date: Aug 2012
Location: Windermere, FL
Posts: 2,086
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P0300 Random Misfire Detected (Update)
Oh fun fun fun with this car again! Check engine light came on this morning. Had it checked out at AutoZone and got the P0300 code. Will have it towed to the dealer on Monday.
*** Update*** So the dealer stated during diagnostic nothing came up and they couldn't get any cylinders to misfire during the test. Even though the check engine light is off, they still see the code in the history. But can't explain what caused it. So I guess it's just a phantom issue! Last edited by sonnydurden; 12-05-2016 at 04:44 PM. |
12-03-2016, 10:02 AM | #2 | |
Drives: 2016 Summit White 2SS (Auto) Loaded Join Date: Jul 2016
Location: Ontario
Posts: 487
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Quote:
- Faulty spark plug (s) - Faulty ignition coil (s) - Clogged or faulty fuel injector (s) - Intake air leak - Fuel injectors harness is open or shorted - Fuel Injectors circuit poor electrical connection - Ignition coils harness is open or shorted - Ignition coils circuit poor electrical connection - Insufficient cylinders compression - Incorrect fuel pressure |
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12-03-2016, 10:36 AM | #3 | |
Drives: ‘16 1SS & ‘19 1LT Join Date: Aug 2012
Location: Windermere, FL
Posts: 2,086
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Quote:
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12-05-2016, 04:48 PM | #4 |
Drives: ‘16 1SS & ‘19 1LT Join Date: Aug 2012
Location: Windermere, FL
Posts: 2,086
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So the dealer stated during diagnostic nothing came up and they couldn't get any cylinders to misfire during the test. Even though the check engine light is off, they still see the code in the history. But can't explain what caused it. So I guess it's just a phantom issue!
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12-05-2016, 06:10 PM | #5 |
Drives: 2016 Summit White 2SS (Auto) Loaded Join Date: Jul 2016
Location: Ontario
Posts: 487
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Possibly fuel, but glad to see it's gone
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12-05-2016, 06:22 PM | #6 |
Drives: ‘16 1SS & ‘19 1LT Join Date: Aug 2012
Location: Windermere, FL
Posts: 2,086
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12-05-2016, 09:08 PM | #7 |
Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
Location: Norman, OK
Posts: 2,424
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Make sure all of the spark plug wires are seated at the coil and on the plug. This was a issue on the 2014/15 GM trucks as well, usually found to be a spark plug wire that had been seated fully.
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12-05-2016, 10:21 PM | #8 |
Drives: ‘16 1SS & ‘19 1LT Join Date: Aug 2012
Location: Windermere, FL
Posts: 2,086
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05-03-2021, 02:48 PM | #9 |
j1ss
Drives: '21 2SS 1LE Join Date: Dec 2019
Location: Florida
Posts: 384
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What was the result of this?
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