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Engine light on p300,p301 codes,rough idle, and esc light on randomly

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Posted on Jan 02, 2017

redds55
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SOURCE: at idle vech starts running

Check for vacuum leak.Check all vacuum hoses and especially around the intake manifold these motos are prone for intake gaskets leaking.This will cause a code P0300.HOPE THIS HELPS!!

Posted on Apr 19, 2011

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2011 mini convertible misfire. Started with P300 and P301. Changed engine coil for cylinder 1 and all four plugs. Same issue now with P300,P303 &P304. Thoughts as to what to tackle next?


Do the following take coil from cylinder 3 put in cylinder 1, take coil from 4 put in cylinder 2, put coil from cylinder 1 into cylinder 3, put coil from cylinder 2 into cylinder 4, reset computer, drive vehicle if you get codes for cylinder 1 and 2 replace coils

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How to fix 2002 BMW M3 service code 11360212. The code says solenoid valve for camshaft adjusting unit Permanent failure. What part needs to be replaced or repaired?


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2007 Kia Sedano LX ESC light went on and check engine light went on. Rough idle and lost acceleration. Now it started normal with no ESC light on and no Check Engine light on either


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P300 code on a 1998 toyota camry LE V-6


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1 Answer

P300 p301


I believe the p300 and p301 codes are emission control codes. Rough idle? Usually changing some emission parts will help. Especially if you have to pass air quality. So i recommend changing the PCV valve. If your car has a lot of miles,you should change EGR valve O2 sensor. These items can be pricey. Your cars computer will adjust itself for these conditions. Eventually,the car will just run poorly though.After you fix it,the codes can be erased at your dealer.

Nov 24, 2012 | 2007 Kia Rio5

1 Answer

At idle vech starts running rough and check engine light starts to flash if i try to drive vech runs very rough and won't pick up speed. checked code with scanner and found code p300 mulitiple random...


Check for vacuum leak.Check all vacuum hoses and especially around the intake manifold these motos are prone for intake gaskets leaking.This will cause a code P0300.HOPE THIS HELPS!!

Apr 19, 2011 | 2003 Chevrolet Silverado 2500HD

2 Answers

What do these codes mean?


Code p300 - random misfire
code p301 - testing and results
code p303 - misfire cylinder 3
code p306 - misfire cylinder 6

i love code questions!!! i'm so good in this!

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