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05-16-2020, 06:26 AM | #1 |
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'15 E84 N20 - P0300, P0301, P0302, P0303, P0304 all at once... then fine
Hey all -
Wife went to grab groceries in the E84 last night. We had started the car about 3 hours prior and moved it over in the driveway so I could take another car out. Then she started the E84 and got "Engine Malfunction" and rough running. She shut the car off and started it again - check engine light on but the engine ran fine. She came back inside. I went out, checked under the hood and engine cover for squirrel or other damage (lot of that happening around here) - all good. I start the car, CEL still on, but I rev the engine off idle listening for chain noise or something and its smooth as butter - turbo spool, blow off. Everything sounds find. I grab my OBD2 adapter and check in torque and have: P0300, P0301, P0302, P0303, P0304 - misfire general, and then each cylinder. Weird. I did not experience it stumble/run rough - I cleared the code and drove it for 30 mins without issue. Kept Torque app open - it made 16.5 - 17 psi of boost, AFR was down to 12:1 on load and 14.6-15 on cruise. Everything behaving. Could have been a fluke? I replaced the plugs about 5k miles ago with OE. Car has 65k on it. No obvious issues otherwise. Thanks!
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2015 BSM X1 M Sport - BSM 1992 525i 1987 325e |
05-16-2020, 06:32 PM | #2 |
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I have a '13 N55, but I have the same thing happen about 1-2 times per year- engine malfunction warning with various misfire codes. Every time I just turn off the car, clear the codes and restart, and everything is fine.
Mentioned this to the dealership once a few years ago, they looked everything over and couldn't find an issue or reproduce it and said all checked out.
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2013 MG X1 x35i M Sport
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05-17-2020, 04:16 PM | #3 | |
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Thanks for confirming another instance of this. Like I said, and you confirmed, the car started 100% after this instance, cleared the codes, did like 10 - 15 miles of spirited driving without a hiccup. Here's hoping it's nothing. I also wanted to avoid a dealer good chase. Thanks again
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