Question about 2002 Toyota Tacoma
CODE PO300 MULTIPLE CYLINDER MISFIRE DETECTED CONDITIONS.POSSIBLE CAUSES - AIR LEAK IN THE INTAKE MANIFOLD OR IN THE EGR OR PCV SYSTEM - BASE ENGINE MECHANICAL FAULT THAT AFFECTS TWO OR MORE CYLINDERS - EGR VALVE IS STUCK OPEN OR THE PCV SYSTEM HAS VACUUM LEAK - DIRTY OR STICKING FUEL INJECTORS - BAD COIL OR PLUGS - MASS AIRFLOW METER IS CONTAMINATED OR ITS SIGNAL OUT OF RANGE. PO451 - EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE PERFORMANCE CONDITIONS.POSSIBLE CAUSE CANISTER PUMP MODULE - CONNECTOR WIRE HARNESS CANISTER PUMP MODULE ECM - EVAP SYSTEM HOSE PIPE FROM AIR INLET PORT TO CANISTER PUMP MODULE CANISTER FILTER FUEL TANK VENT HOSE.FAULTY PCM.
Posted on May 10, 2010
Your a little confused on the code issues and ability to fix at home in the driveway.
Codes Do Not tell you what is wrong or what to fix.
They are sensors that are out of range for a period of time.
A code may help you find a system problem ,on your vehicle.
A code may be the symptom,not the cause,that set it.
The 451 is an EVAP Code. Not easy to find issue without knowing,entire system and having a smoke machine or vacuum test or pressure test it. Also a scanner to help out.
Education is the key here
Don't throw parts at it,that can get expensive real quick.
Posted on May 10, 2010
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Posted on Jan 02, 2017
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