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Code p30 misfiring keeps coming on ,what is a code p30?

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My car has started to shudder and the engine light plus the ABS and T/C lights have come on. What does this mean?

When the check engine light comes on it will usually disable the traction control which is also tied into the ABS as a safety feature resulting in their lights to come on. The shudder may be caused by a cylinder misfire which in turn should cause the check engine light to flash when the misfire occurs and will keep the check engine light on. Have the computer scanned for codes to see if a misfire is present and correct from there. It may be as simple as a spark plug/ignition coil failure. When the problem is corrected and the codes cleared, the lights will go out

Feb 13, 2016 | Cars & Trucks

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The error code p0301 ,This code is related to misfire.The cylinder is misfiring. p0301 this is the indication of cylinder number 1 ,that is misfiring.If the code comes up as p0300 this is the indication of random misfire from all the cylinders.But in your case its indicating p0301 this is indication of cylinder 1 misfire.Check cylinder 1 and replace the faulty cylinder 1 to clear the fault.The spark plugs and the wires connecting to spark plugs also needs to be checked. Keep updated with any more query.Thanks.

Oct 12, 2010 | 2003 Mitsubishi Lancer

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My engie light keeps coming on i have a code for

That code is associated with random/ multiple misfires in your ignition circuit. Since it isn't just one cylinder, then the problem is usally an ignition module failing.

Apr 13, 2010 | 1999 Pontiac Firebird

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On a 2003 Buick Rendevous the computer keeps coming up with a code of P1374. Have check both of the crankshaft sensors, the 24x has an input of 11.15 instead of the suggested 12 volts. Nothing else obvious...

Timing Reference High Resolution Signal A ( No Pulses) This is a misfire code so try this info. This info is where your mechanic would be following.

The following info comes from a code reference guide for troubleshooting.

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
A random misfire code usually indicates a vacuum leak or bad gas.
a misfire in a specific cylinder should lead you to check the spark plug, fuel injector and compression.

Jan 24, 2010 | 2003 Buick Rendezvous

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2004 Audi A4 misfire

it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps

Jul 28, 2009 | 2004 Audi A4

2 Answers

2001 audi a4 1.8 random misfire

do a compression test then do a combustion pressure test if all good computer is questionable

May 25, 2009 | 2001 Audi A4

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