Question about 2003 Kia Spectra

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Kia 03 Spectra fuel OBD code P0230 primary circuit failure. Relay does not pick up Fuse is good. No spark on the ignition - relay does not pick up fuse is good. What is in the primary circuit and where can I get a schematic . Key Switch ?

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Unfortunately there are no mechanical fixes available because that trouble code indicates a malfunction somewhere in the electrical circuit for the fuel pump and that would include wiring from the battery to the pump, the fuel pump control module and the and the car's brain, the ECM. It can be a loose connection, but if one is not easily found, then the problem has to be tested with special electrical testing equipment. More information is available but I can't post an illustration of the troubleshooting for this Diagnostic Trouble Code.

There is, however, an illustration that describes that troubleshooting at this location currently:
http://www.iwsti.com/forums/2-5-liter-litre-factory-motor/145319-p0230-fuel-pump-primary-circuit-malfunction-2.html

Posted on Feb 10, 2011

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2004 pontiac bonneville ran for about 5 minutes then shut off. i scanned the computer and it showed a p0230 code.fuel pump primary circuit misfunction.now it wont start at all.battery alittle weak.


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Hey James , It's in the under hood fuse box , F/PMP relay an there is a fuse F/PMP 15 amp. Underhood Accessory Wiring Junction Block
Right side of the engine compartment, mounted to the strut tower

The PCM controls the fuel pump relay by supplying switched ignition voltage to the fuel pump relay coil. When the ignition switch is first turned On, the PCM energizes the fuel pump relay. The relay contacts close applying power to the fuel pump. The fuel pump relay will remain On as long as the engine is running or cranking and the PCM is receiving reference pulses. If no reference pulses are present, the PCM de-energizes the fuel pump relay within 2 seconds. With the engine stopped, the fuel pump can be turned On with a scan tool.
If the PCM detects a problem on the relay control circuit, DTC P0230 will set. Use this table if DTC P0230 is not set and a problem exists with the fuel pump!

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The pump relay should have four terminals. Number 2 is a green red wire which powers the pump from a 10 amp fuse. Number 3 goes to the pump. Number 1 powers the magnet in the relay and number 4 is the ground signal from the engine computer. If the relay does not engage on its own, one of these circuits is not working.
The injectors get power from that 15amp fuse which gets power from the main relay.
The problem could be farther upstream with the 25amp main fuse.

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Probable Causes: Fuel Pump (P0230 to P0233) PCM (P0600 to P0606) Crank Sensor (P0355 to P0399) Fuel Pressure (P0190 to P0194) Chances are the Check Engine Light is not on, but you may find any of the following codes: P0230 to P0233 Fuel Pump codes P0600 to P0606 PCM related codes P0335 to P0339 Crank Sensor codes P0190 to P0194 Fuel Pressure Sensor codes No spark due to a bad crank position sensor, a faulty ignition module or PCM, a problem in the ignition circuit (ignition switch, antitheft system, wiring, etc.), a faulty park/neutral safety switch, a bad ignition coil (only on engines with a single coil ignition), or wet plugs or plug wires (did it rain last night, did you just wash the engine?) A less common cause is a worn starter that draws so many amps while cranking the engine that there's not enough juice left to adequately power the ignition system and fuel injectors. Contributing factors might be a weak battery and/or loose or corroded battery cables. No fuel because of a dead fuel pump, bad fuel pump relay, blown fuel pump fuse, plugged fuel filter or line, or failed PCM injector driver circuit or injector power supply relay. Or, the fuel tank might be empty (don't believe what the gauge is telling you), or the fuel tank might contain contaminated fuel (water or too much alcohol) or the wrong type of fuel (whoops, somebody put in diesel instead of gasoline). No compression because the timing belt or chain is broken, the timing belt or chain is loose and jumped out of time, or the overhead camshaft has snapped.

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1 Answer

WHAT DOES P0230 MEAN


P0230 == "Fuel Pump Primary Circuit Malfunction"
A great plain-english explanation can be found here:http://www.obd-codes.com/p0230

If you're comfortable using basic tools, you may find this link helpful:http://www.hotrodlane.cc/New%20LS%20Links%20Page/LS%20trouble%20codes/DTC%20P0230.htm

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1 Answer

Chevy Silverado 2002 2500 shows trouble code, P0230, and P0300


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Please go to this LINK for P0300 diagnosis.

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2 Answers

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