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Posted on Feb 23, 2011
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MY CAR WAS PUT ON A MACHINE AND IT CAME BAC THE FOLLOWING CODES: PO 301, PO304, PO335, AND PO 750. I DONT KNOW WHAT TO DO MY MECHANIC SAYS THAT THE SHIFT SOLENOID IS LOCATED IN MY TRANSMISSION AND HE DOESNT KNOW IF HE CAN DO IT. IF ANYONE CAN HELP ME PLEASE DO. WHAT DOES THE OTHER CODES STAND FOR.

  • Anonymous Feb 23, 2011

    The p0301 and p0304 are misfire codes for cylinder 1 and cylinder 4. P0335 is the crankshaft position sensor code. Have you ever had a tune up on the vehicle? If you have spark plugs that are fouled or bad coils on those cylinder it could cause all these codes to come up. What is the year make and model?

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  • Posted on Feb 23, 2011
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Hi p -codes are as follows po 301 cylinder 1 missfire detected
po 304 cylinder 4 missfire detected
po 335 crankshaft position sensor A circuit malfunctio
po 750 shift solenoid A malfunction

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1answer

PROBLEM CODES;P0301,P0302,P0304,P0300,P1399,07-02,09-02,07-03

po301 to po304 are miss fire codes, 301 cylinder 1, 302 cylinder 2 Etc, p1399 means that this must be a Honda manufactured vehicle. All are misfire codes, Could be plugs, wires, coils. ETC, Check and you will find the problem. God-Bless!
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Over heate my 2002 grand Cherokee . It has 3 codes po 300 po 301 po 302 . Blown head gasket ?

You are probably right as all codes refer to misfire in cylinders.. have a compression test done to check for blown head gasket and cracked/warped head and have a cooling pressure test done also to show cracked head and other than head gasket.
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2000 Honda Accord po-7*** errors

You can't fix these types of complex electronic engine control problems without special equipment.
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Po302 po304 po307 po171 codes are showing up, any ideas?

PO 301 thru PO 308 are engine cylinders with possible
misfires & bad coils

PO 171 is a lean condition on Bank# 1 oxygen sensor

If the front or upstream sensor are over 100,000 miles, change
them as preventative maintenance

The cylinder misfires have to be diagnosed & tested any of
several ways,professionally for the most part
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Need to know how to get rid of these codes

PO 440 & PO 422, Has to do with the Oxagen sensors, PO 301 is a m,issfire code,That has to do with the number one cylinder, That mostly has to do with a bad spark plug, Or spark plug wire , If the vehilcle has lower (Mileledge) On it, If it has a lot of miles on it the coil pack could be getting weak,
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What's your problem? my 2004 mercury monterey has eight codes ,po301,poo53,po106,po316,po300,po304,po305,and po306

PO 300 is multiple misfires detected
PO 301, 304, 305, 306 are misfires in cylinders 1,4,5,&6
PO 053 is HO2S Bank 1 Sensor 1 Heater Resistance
PO 106 is MAP/BARO CKT Range / Perf
PO 316 is Misfire detected 1st 1000 Revs.

On a misfire, I usually push towards the spark plugs, plug wires, and coil packs / distributor coil.
You have PO 106 and PO 053 that need to be inquired about at nearest AutoZone.
They can give you an idea as to what is the problem on these.

Did a MAP sensor **** out and cause all the misfires ?
Did a misfire cause the MAP sensor error?
You see what I'm saying ?...Something caused all the misfires...thinking MAP...but not that familiar with the function of the MAP.

Hope this helps...
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I have 3 codes on my 2001 saturn SL2. PO301, PO410, PO442. What do these mean? Is the car worth repairing? Will it pass a vehicle emissions test?

PO 301 is no 1 cylinder misfire, PO 410 is secondary air injection system, & PO 442 is Medium leak detected in EVAP system.
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Check engine light is flashing and car is shaking especially when i accelerate

You are experiencing a secondary ignition miss fire.The most likely cause would be one or more spark plug wires breaking down .If you can go to a Autozone parts store they can check the codes for free .PO 301 to PO 306 codes would be miss fire codes.:)
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