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2004 Powertrain Control System Electronics Diagnostic Guide
Courtesy of: Ford Motor Company Publication

Fault CodeCircuit IndexCondition DescriptionProbable Causes
P0046VGT SolenoidTurbo/supercharger boost control solenoid circuit range/performanceOpen circuit, control circuit short to voltage, control circuit short to ground, faulty solenoid, faulty PCM
P0069BAROMAP/BARO correlationMAP/BARO, EP must be within 1 psi
P0096IAT2Intake air temperature sensor 2 circuit range/performanceFaulty sensor, faulty circuitry, faulty PCM
P0097IAT2Intake air temperature sensor 2 circuit low inputShort to ground, faulty sensor, faulty PCM
P0098IAT2Intake air temperature sensor 2 circuit high inputShort to voltage, open in return circuit, faulty PCM, faulty sensor
P0101MAFMass or volume air flow circuit range/performanceRestricted air flow, faulty sensor, contamination, intake air leak, faulty PCM
P0103MAFMass or volume air flow circuit high inputRestriction, water intrusion, signal short to voltage, return circuit open, faulty sensor, faulty PCM
P0107BAROManifold absolute pressure/BARO sensor low inputOpen VREF, signal circuit short to ground, faulty sensor, faulty PCM
P0108BAROManifold absolute pressure/BARO sensor high inputShort to voltage, open in signal return, faulty sensor, faulty PCM
P0112IATIntake air temperature circuit low inputShort to ground, faulty sensor, faulty PCM
P0113IATIntake air temperature circuit high inputShort to voltage, open in signal return, faulty sensor, faulty PCM
P0117ECTEngine coolant temperature circuit low inputSignal short to ground, faulty sensor, faulty PCM
P0118ECTEngine coolant temperature high inputSignal short to voltage, open in return circuit, faulty sensor, faulty PCM
P0196EOTEngine oil temperature sensor circuit range/performanceFaulty circuitry, fault sensor, faulty thermostat, faulty PCM
P0197EOTEngine oil temperature sensor circuit low inputSignal short to ground, faulty circuitry, faulty sensor, faulty PCM
P0198EOTEngine oil temperature sensor circuit high inputSignal short to voltage, open in signal return, faulty circuitry, faulty sensor, faulty PCM
P0219 Engine overspeed conditionExcessive engine speed
P0230Fuel PumpFuel pump primary circuitOpen FP relay, inertia switch, faulty fuel pump
P0231Fuel PumpFuel pump secondary circuit lowFuse, relay, inertia switch, fuel pump, open/short circuit
P0232Fuel PumpFuel pump secondary circuit highRelay failure, short circuit, pump failure
P0236MAPTurbo/supercharger boost sensor A circuit range/performanceRestricted exhaust, hose missing
P0237MAPTurbo/supercharger boost sensor A circuit lowCircuit open, short to ground, faulty sensor
P0238MAPTurbo/supercharger boost sensor A circuit highCircuit short to voltage, faulty sensor
P0261INJCylinder #1 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0262INJCylinder #1 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0263INJCylinder #1 contribution/balancePower cylinder, valve train or injector
P0264INJCylinder #2 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0265INJCylinder #2 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0266INJCylinder #2 contribution/balancePower cylinder, valve train or injector
P0267INJCylinder #3 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0268INJCylinder #3 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0269INJCylinder #3 contribution/balancePower cylinder, valve train or injector
P0270INJCylinder #4 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0271INJCylinder #4 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0272INJCylinder #4 contribution/balancePower cylinder, valve train or injector
P0273INJCylinder #5 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0274INJCylinder #5 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0275INJCylinder #5 contribution/balancePower cylinder, valve train or injector
P0276INJCylinder #6 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0277INJCylinder #6 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0278INJCylinder #6 contribution/balancePower cylinder, valve train or injector
P0279INJCylinder #7 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0280INJCylinder #7 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0281INJCylinder #7 contribution/balancePower cylinder, valve train or injector
P0282INJCylinder #8 injector circuit lowOpen circuit, fuel injector, FICM connector loose, FICM
P0283INJCylinder #8 injector circuit highCircuit short to ground or voltage, fuel injector, FICM
P0284INJCylinder #8 contribution/balancePower cylinder, valve train or injector
P0297INJVehicle overspeed conditionExcessive engine speed
P0298EOTEngine oil overtemperature conditionFaulty sensor, faulty circuitry, cooling system fault, faulty thermostat, faulty PCM
P0299EPTurbo/Supercharger UnderboostEP actual is less than commanded
P0300INJRandom misfire detectedCKP/CMP not in sync, more that one cylinder is detected
P0301INJCylinder #1 misfire detectedMechanical engine failure
P0302INJCylinder #2 misfire detectedMechanical engine failure
P0303INJCylinder #3 misfire detectedMechanical engine failure
P0304INJCylinder #4 misfire detectedMechanical engine failure
P0305INJCylinder #5 misfire detectedMechanical engine failure
P0306INJCylinder #6 misfire detectedMechanical engine failure
P0307INJCylinder #7 misfire detectedMechanical engine failure
P0308INJCylinder #8 misfire detectedMechanical engine failure
P0335CKPCrankshaft position sensor A circuitCrankshaft sensor circuit
P0336CKPCrankshaft position sensor A circuit range/performanceCrankshaft sensor circuit
P0340CMPCamshaft position sensor A circuit (bank 1 or single sensor)Camshaft sensor circuit
P0341CMPCamshaft position sensor A circuit range/performance (bank 1 or signal sensor)Camshaft sensor circuit
P0381GPLGlow plug/heater indicator circuitOpen circuit, short to ground
P0401EGRExhaust gas recirculation flow insufficient detectedEGR valve, sensor failure
P0402EGRExhaust gas recirculation flow excessive detectedEGR valve, sensor failure
P0403EGRExhaust gas recirculation control circuitOpen circuit, short to ground, short to voltage, faulty valve, faulty PCM
P0404EGRExhaust gas recirculation control circuit range/performanceDifference between command and actual exceeds a specified limit
P0405EGRExhaust gas recirculation sensor A circuit lowVoltage below a specified range
P0406EGRExhaust gas recirculation sensor A circuit highVoltage above a specified range
P0407EGRExhaust gas recirculation sensor B circuit lowSensor, open circuit, short to ground
P0408EGRExhaust gas recirculation sensor B circuit highSensor, short to voltage
P0460FLIFuel level sensor circuitOpen circuit, short circuit, cluster, tank unit, open return
P0470EPExhaust pressure sensorFaulty sensor, open signal return, faulty PCM
P0471EPExhaust pressure sensor range/performanceFaulty sensor, restricted supply tube, faulty PCM
P0472EPExhaust pressure sensor low inputOpen VREF, short circuit, open circuit
P0473EPExhaust pressure sensor high inputShort to voltage
P0478EPExhaust pressure control valve high inputEP above specified value
P0480VFANFan 1 control circuitShort to voltage, short to ground, open circuit
P0487EGREGR throttle position control circuitCircuit open, shorted, actuator
P0488EGREGR throttle position control range/performanceThrottle plate, actuator, sensor
P0500VSSVehicle speed sensor AFaulty sensor, circuit failure, PCM failure, trans failure, TR failure
P0528FSSFan speed sensor circuit no signalMechanical failure, short to voltage, open circuit, short to ground
P0560PCEDSystem voltageCharging system failure
P0562PCEDSystem voltage lowCharging system failure
P0563PCEDSystem voltage highCharging system failure
P0565SCCSCruise control ON signalOpen circuit, short circuit, switch failure, PCM failure to activate switch during testing
P0566SCCSCruise control OFF signalOpen circuit, short circuit, switch failure, PCM failure to activate switch during testing
P0567SCCSCruise control RESUME signalOpen circuit, short circuit, switch failure, PCM failure to activate switch during testing
P0568SCCSCruise control SET signalOpen circuit, short circuit, switch failure, PCM failure to activate switch during testing
P0569SCCSCruise control COAST signalOpen circuit, short circuit, switch failure, PCM failure to activate switch during testing
P0603PCEDPowertrain control module keep alive memory (KAM) errorFaulty connection, faulty PCM
P0605PCEDPowertrain control module read only memory (ROM) errorInternal PCM failure
P0606PCEDECM/PCM processorInternal PCM fault
P0611FICMFuel injector control module performanceInternal FICM failure
P0620ALTGenerator 1 control circuitCharging system
P0623ALTGenerator lamp control circuitCharging system
P0645PCEDA/C clutch relay control circuitA/C circuit, A/C relay
P0649PCEDCruise control lamp control circuitCircuit continuity
P0670GPCMGlow plug module control circuitShort to voltage, short to ground, open circuit
P0671GPCMCylinder 1 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0672GPCMCylinder 2 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0673GPCMCylinder 3 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0674GPCMCylinder 4 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0675GPCMCylinder 5 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0676GPCMCylinder 6 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0677GPCMCylinder 7 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0678GPCMCylinder 8 glow plug circuitCircuit open, short to ground, short to voltage, faulty glow plug
P0683GPCMGlow plug control module to PCM communication circuitOpen circuit, short to voltage, short to ground, faulty PCM
P0700TRTransmission control system (MIL request)Internal transmission fault
P0703BOOBrake switch B input circuitShort to ground, open circuit, short to voltage, faulty PCM
P0704CPPClutch switch input circuitShort to ground, open circuit, short to voltage, faulty PCM
P1000PCEDOBD systems readiness test not completeOBD monitors/drive cycles incomplete
P1001PCEDKOER not able to complete, KOER abortedEntry conditions for KOER self-test not met
P1102MAFMass air flow sensor in range but lower than expectedVPWR open, return circuit open, signal short to ground sensor
P1139WIFWater in fuel indicatorWIF lamp, faulty PCM
P1148ALTGenerator 2 control circuitCharging system
P1149ALTGenerator 2 control circuit highCharging system
P1184EOTEngine oil temperature sensor out of self test rangeEngine too cold/hot, leaking thermostat, faulty sensor
P1260 Theft detected, vehicle immobilizedAnti-theft system failure
P1284ICPAborted KOER injector control pressure regulatorIPR valve, circuit failure
P1334EGREGR throttle position sensor minimum stop performanceThrottle plate, actuator sensor
P1335EGREGR position sensor minimum stop performanceDifference between command and actual exceeds limit
P1378INJ ModuleFICM supply voltage circuit lowFaulty connection, fuse, faulty relay, short to ground, charging system
P1379INJ ModuleFICM supply voltage circuit highCharging system
P1408EGRExhaust gas recirculation flow out of self test rangeEGR above/below required calibration
P1464ACCSA/C demand out of self test rangeOperator error, A/C circuit shorted to voltage
P1501VSSVehicle speed sensor out of self test rangeOperator error
P1502PCEDInvalid test auxiliary power control module functioningAPCM active while KOER test is running
P1531PCEDInvalid test accelerator pedal movementAccelerator moved during KOER testing
P1536PBAParking brake switch circuitCircuit, switch, PCM failed to activate switch during KOER
P1635PCMTire/axle out of acceptable rangePCM programming
P1636PCMVehicle ID block corrupted, not programmedPCM programming
P1703BOOBrake switch out of self test rangeDuring KOER self-test the BPP signal did not cycle high and low.
P1705TRTransmission range circuit not indicating park/neutral during self testTrans range failure
P1725 Insufficient engine speed increase during self-testSystem voltage out of self-test range. Repeat the self-test.
P1726 Insufficient engine speed decrease during self-testSystem voltage out of self-test range. Repeat the self-test.
P2122APPThrottle/pedal position sensor/switch D circuit low inputFaulty sensor, poor connection, open in signal circuit, signal circuit short to ground, faulty PCM
P2123APPThrottle/pedal position sensor/switch D circuit high inputShort to voltage, signal return open, faulty sensor, faulty PCM
P2127APPThrottle/pedal position sensor/switch E circuit low inputFaulty sensor, poor connection, open in signal circuit, signal circuit short to ground, faulty PCM
P2128APPThrottle/pedal position sensor/switch E circuit high inputShort to voltage, signal return open, faulty sensor, faulty PCM
P2132APPThrottle/pedal position sensor/switch F circuit low inputFaulty sensor, poor connection, open in signal circuit, signal circuit short to ground, faulty PCM
P2133APPThrottle/pedal position sensor/switch F circuit high inputShort to voltage, signal return open, faulty sensor, faulty PCM
P2138APPThrottle/pedal position sensor/switch D/E voltage correlationDifference in sensor readings
P2139APPThrottle/pedal position sensor/switch D/F voltage correlationDifference in sensor readings
P2140APPThrottle/pedal position sensor/switch E/F voltage correlationDifference in sensor readings
P2199IATIntake air temperature 1/2 correlationDifference between IAT and IAT2 exceeds a specified value
P2262MAPTurbo/supercharger boost pressure not detected mechanicalMinimum boost under load. MAP hose disconnected.
P2263MAPTurbo/supercharger system performanceMAP does not achieve the minimum pressure
P2269WIFWater in fuel conditionWater in fuel, faulty connection, short in circuit, faulty sensor, faulty PCM
P2284ICPInjector control pressure sensor circuit range/performanceA difference in commanded versus actual injection oil pressure was detected.
P2285ICPInjector control pressure sensor circuit lowICP signal is lower than specified value
P2286ICPInjector control pressure sensor circuit highICP signal is higher than specified value
P2288ICPInjector control pressure too highICP pressure is greater than specified value
P2289ICPInjector control pressure too high engine OFFICP pressure is greater than specified value
P2290ICPInjector control pressure too lowActual pressure is less than commanded for a specified time
P2291ICPInjector control pressure too low engine crankingICP cranking pressure too low
P2552FICMMFICMM circuit throttle/fuel inhibit circuitRPM out of range for closed pedal position
P2614CMPCamshaft position output circuitIncorrect CMP signal
P2617CKPCrankshaft position output circuitIncorrect CKP signal
P2623IPRInjector control pressure regulator circuitOpen circuit, short to ground, IPR stuck
U0101PCEDLost communication with TCMCommunication failure
U0105PCEDLost communication with FICMCommunication failure
U0155PCEDLost communication with instrument clusterCommunication failure
U0306PCEDSoftware incompatibility with fuel injector control moduleCommunication failure
P1610PCEDInstall a new PCM modulePCM flashing failure
P1611PCEDDiagnose furtherPCM flashing failure
P1615PCEDFlash erase errorPCM flashing failure
P1616PCEDFlash erase error, low voltagePCM flashing failure
P1617PCEDBlock programming errorPCM flashing failure
P1618PCEDBlock programming error, low voltagePCM flashing failure
 
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