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p300: dtc codes..they came up after an oil change.

Customer Question
Good evening! I also am having...
Good evening!
I also am having dtc codes po300-306 come up. they came up after an oil change. until now i have always used the recommended 5-30. this time i used a 10w30 synthetic blend. any chance the slightly heavier oil could be causing the problem?
Submitted: 12 years ago.Category: Honda
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Answered in 53 minutes by:
3/4/2010
Mechanic for Honda: Rob Tech, Honda Master Technician replied 12 years ago
Rob Tech
Rob Tech, Honda Master Technician
Category: Honda
Satisfied Customers: 119
Experience: 25 years in automotive industry with knowledge from the past to the most recent Hondas on the road.
Verified
Hi, those are misfire codes and should not be related to an oil change even with synthetic blend. The only thing I would check concerning oil is the level. If it is too full then it could cause a misfire. Other than that how many miles are on your vehicle?
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Customer reply replied 12 years ago

50k

oil level is correct

Mechanic for Honda: Rob Tech, Honda Master Technician replied 12 years ago
Okay, I have seen this a couple of times recently. The software is misinterpreting the inputs. You will need to take it to a dealer and have a download performed. Then either have them or you can adjust the valves. Honda has a bulletin on this. Let me know if I can assist you further. If my information has been helpful please remember to hit the accept icon, a deposit does not account as credit for an acceptable answer. Thank you.
Rob Tech
Rob Tech, Honda Master Technician
Category: Honda
Satisfied Customers: 119
Experience: 25 years in automotive industry with knowledge from the past to the most recent Hondas on the road.
Verified
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Mechanic for Honda: Rob Tech, Honda Master Technician replied 12 years ago
Actually, you should still be covered under your drive train warranty.
Rob Tech
Rob Tech, Honda Master Technician
Category: Honda
Satisfied Customers: 119
Experience: 25 years in automotive industry with knowledge from the past to the most recent Hondas on the road.
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Customer reply replied 12 years ago
do you have the TSB reference number for this? service writers often have no clue as to current TSB's or what one is for that matter .
Mechanic for Honda: Rob Tech, Honda Master Technician replied 12 years ago
bulletin is 09-090
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