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2002 Powertrain Control System Electronics Diagnostic Guide
Courtesy of: Ford Motor Company Publication


Fault Code Refer to Footnote Circuit Index Condition Description Probable Causes
P0107 a b BARO Barometric pressure sensor circuit low input PCM's internal barometric sensor
P0108 a b BARO Barometric pressure sensor circuit high input PCM's internal barometric sensor
P0112 b IAT Intake air temp. sensor circuit low input Grounded circuit, biased sensor, PCM
P0113 b IAT Intake air temp. sensor circuit high input Open circuit, biased sensor, PCM, short to 5v
P0122 a b AP Accelerator pedal sensor circuit low input Grounded circuit, biased sensor, PCM
P0123 a b AP Accelerator pedal sensor circuit high input Open circuit, biased sensor, PCM, short to 5v
P0197 a b EOT Engine oil temp. sensor circuit low input Grounded circuit, biased sensor, PCM
P0198 a b EOT Engine oil temp. sensor circuit high input Open circuit, biased sensor, PCM short to 5v
P0220 IVS Throttle switch B circuit malfunction Short/open circuit, switch failure, operator, PCM
P0221 a b AP/IVS Throttle switch B circuit performance Failed pedal assembly
P0230 FP Fuel pump relay driver failure Open FP relay, blown fuse, open/grounded circuit
P0231 b FP Fuel pump circuit failure Fuse, relay, inertia switch, fuel pump, open/short circuit
P0232 FP Fuel pump circuit failure Relay failure, short circuit, pump failure
P0236 b MAP Turbo boost sensor A circuit performance Restricted inlet/exhaust/supply hose, missing hose
P0237 a b MAP Turbo boost sensor A circuit low input Circuit open, short to ground, MAP sensor
P0238 a b MAP Turbo boost sensor A circuit low high Circuit short to power, MAP sensor
P0261 a b INJ Injector circuit low Cylinder 1 Harness short to ground
P0262 INJ Injector circuit high Cylinder 1 Miswired connector or harness
P0263 PCED Cylinder 1 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0264 a b INJ Injector circuit low Cylinder 2 Harness short to ground
P0265 INJ Injector circuit high Cylinder 2 Miswired connector or harness
P0266 PCED Cylinder 2 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0267 a b INJ Injector circuit low Cylinder 3 Harness short to ground
P0268 INJ Injector circuit high Cylinder 3 Miswired connector or harness
P0269 PCED Cylinder 3 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0270 a b INJ Injector circuit low Cylinder 4 Harness short to ground
P0271 INJ Injector circuit high Cylinder 4 Miswired connector or harness
P0272 PCED Cylinder 4 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0273 a b INJ Injector circuit low Cylinder 5 Harness short to ground
P0274 INJ Injector circuit high Cylinder 5 Miswired connector or harness
P0275 PCED Cylinder 5 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0276 a b INJ Injector circuit low Cylinder 6 Harness short to ground
P0277 INJ Injector circuit high Cylinder 6 Miswired connector or harness
P0278 PCED Cylinder 6 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0279 a b INJ Injector circuit low Cylinder 7 Harness short to ground
P0280 INJ Injector circuit high Cylinder 7 Miswired connector or harness
P0281 PCED Cylinder 7 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0282 a b INJ Injector circuit low Cylinder 8 Harness short to ground
P0283 INJ Injector circuit high Cylinder 8 Miswired connector or harness
P0284 PCED Cylinder 8 contribution/balance fault Power cylinder, valve train or injector problem, circuit
P0301 b INJ Fault cylinder 1 Misfire detected Mechanical engine failure
P0302 b INJ Fault cylinder 2 Misfire detected Mechanical engine failure
P0303 b INJ Fault cylinder 3 Misfire detected Mechanical engine failure
P0304 b INJ Fault cylinder 4 Misfire detected Mechanical engine failure
P0305 b INJ Fault cylinder 5 Misfire detected Mechanical engine failure
P0306 b INJ Fault cylinder 6 Misfire detected Mechanical engine failure
P0307 b INJ Fault cylinder 7 Misfire detected Mechanical engine failure
P0308 b INJ Fault cylinder 8 Misfire detected Mechanical engine failure
P0340 CMP Camshaft position sensor ckt. malfunction Open/grounded circuit, sensor fault, short to power
P0341 b CMP Camshaft position sensor ckt. performance Harness routing, charging circuit, sensor
P0344 a b CMP Camshaft position sensor ckt. intermittent Harness routing, charging ckt., sensor, int. ckt., improper gap
P0380 b GP Glow plug circuit malfunction Open/grounded ckt., solenoid open/shorted, failed PCM
P0381 b GP Glow plug indicator circuit malfunction Open/grounded circuit, lamp open, failed PCM
P0460 FLI Fuel level sensor circuit malfunction Open/short circuit, cluster, tank unit, open case GND
P0470 EBP Exhaust back pressure sensor circuit malfunction Biased sensor, open signal return
P0471 b EBP Exhaust back pressure sensor circuit performance Plugged, stuck or leaking hose
P0472 b EBP Exhaust back pressure sensor circuit low input Open/grounded circuit, biased sensor, PCM
P0473 b EBP Exhaust back pressure sensor circuit high input Circuit shorted to 5v, biased sensor, PCM
P0475 b EPR Exhaust pressure control valve malfunction Open/grounded ckt., solenoid open/shorted, failed PCM
P0476 EPR Exhaust pressure control valve performance Failed/stuck EPR control, EBP fault, EPR circuit
P0478 b EPR Exhaust pressure control valve high input Plugged sensor line, stuck butterfly, restricted exhaust
P0500 b VSS Vehicle speed sensor malfunction Sensor, circuit, PCM, PSOM, TR failure, low trans. fluid
P0503 VSS Vehicle speed sensor noisy Harness routing, sensor
P0541 MIAH Manifold intake air heater... Open/short circuit
P0542 MIAH Manifold intake air heater... Grounded circuit
P0560 PCED System voltage malfunction Charging system problem/load, glow plugs still enabled
P0562 b PCED System voltage low Low sys. voltage, charging sys., internal PCM failure
P0563 PCED System voltage high High sys. voltage, charging sys., internal PCM failure
P0565 PCED Cruise "On" signal malfunction Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test
P0566 PCED Cruise "Off" signal malfunction Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test
P0567 PCED Cruise "Resume" signal malfunction Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test
P0568 PCED Cruise "Set" signal malfunction Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test
P0569 PCED Cruise "Coast" signal malfunction Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test
P0571 BPA Brake switch A circuit malfunction Cruise control codes will be set on every switch test on vehicles not equipped with cruise control
P0603 PCED Internal control module KAM error Open PCM pin, disconnect B+, faulty PCM
P0605 PCED Internal control module ROM error Internal PCM failure
P0606 PCED PCM processor fault Internal PCM failure
P0640 MIAH Manifold intake air heater... Circuit open or shorted to ground
P0670 GPCM GPCM Glow plug control module control line failure Open/shorted circuit, open/shorted GPCM, failed PCM
P0671 GPCM Glow plug #1 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0672 GPCM Glow plug #2 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0673 GPCM Glow plug #3 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0674 GPCM Glow plug #4 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0675 GPCM Glow plug #5 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0676 GPCM Glow plug #6 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0677 GPCM Glow plug #7 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0678 GPCM Glow plug #8 circuit failure Open/shorted circuit, faulty glow plug, failed GPCM
P0683 GPCM GPCM glow plug control module communication line failure Open/shorted circuit, failed GPCM, failed PCM
P0703 BOO Brake switch B circuit malfunction Open/short circuit, switch, PCM, failed to activate switch during KOER switch test
P0704 c CPP Clutch switch input circuit malfunction; F650-F750 with Allison AT545: neutral switch Open/short circuit, switch, PCM, failed to activate switch during KOER switch test
P0705 b TR TR sensor circuit malfunction Resistance in circuit, faulty sensor, PCM
P0707 TR TR sensor circuit low input Open in circuit, biased sensor, PCM
P0708 b TR TR sensor circuit high input Open in circuit, biased sensor, PCM, short to power
P0712 d TFT Trans. fluid temp. sensor ckt. low input Short to ground, biased sensor, PCM
P0713 d TFT Trans. fluid temp. sensor ckt. high input Open in circuit, biased sensor, PCM, short to power
P0715 b d TSS TSS sensor circuit malfunction Short/open circuit, sensor, PCM
P0717 d TSS TSS intermittent failure Short/open circuit, sensor, PCM
P0718 TSS Noisy TSS Erratic signal, sensor, intermittent circuit
P0720 b d OSS OSS sensor circuit malfunction Short/open circuit, sensor, PCM
P0721 OSS Noisy OSS Erratic signal, sensor, intermittent circuit
P0722 d OSS OSS intermittent failure Short/open circuit, sensor, PCM
P0732 GRV Gear 2 incorrect ratio Mechanical/hydraulic failure, 4x4 switch failure
P0733 GRV Gear 3 incorrect ratio Mechanical/hydraulic failure, 4x4 switch failure
P0741 TCC Torque converter clutch ckt. performance Circuit failure, faulty solenoid, PCM
P0743 b d TCC Torque converter clutch system electrical Faulty solenoid, circuit, PCM
P0750 b SS1 Shift solenoid A malfunction Circuit failure, faulty solenoid, PCM
P0755 b d SS2 Shift solenoid B malfunction Circuit failure, faulty solenoid, PCM
P0781 d 1-2 Shift malfunction Circuit failure, faulty solenoid, faulty clutch, PCM
P0782 d 2-3 Shift malfunction Circuit failure, faulty solenoid, faulty clutch, PCM
P0783 d 3-4 Shift malfunction Circuit failure, faulty solenoid, faulty clutch, PCM
P1000 N/A OBDII monitor status OBDII monitors/drive cycle incomplete
P1105 ALT Dual alternator upper fault (monitor) Circuit failure, alternator failure, PCM
P1106 ALT Dual alternator lower fault (control) Circuit failure, alternator failure, PCM
P1107 b ALT Dual alternator lower circuit malf. (control) Circuit failure, alternator failure, PCM
P1108 ALT Dual alternator BATT lamp ckt. malf. Open/short circuit, lamp, fuse, PCM
P1118 b MAT Manifold air temp sensor out of range low Short to GND MAT circuit, MAT sensor
P1119 b MAT Manifold air temp sensor out of range high Open/short to PWR circuit, MAT sensor
P1139 WIFIL Water in fuel lamp circuit malfunction WIF lamp, circuit failure, fuse, PCM
P1140 WIF Water in fuel condition Water in fuel, grounded circuit, shorted sensor, PCM
P1184 TEST Engine oil temp out of self test range Engine too cold/hot, leaking thermostat, ckt., sensor
P1209 b IPR ICP system fault IPR valve stuck
P1210 b ICP ICP above expected level ICP sensor, open signal return
P1211 a b IPR ICP pressure above/below desired IPR valve failed, stuck, or shorted to ground
P1212 ICP ICP voltage not at expected level Biased sensor or ckt., open signal return, low oil in reservoir
P1218 b PCM/IDM CID stuck high CID circuit open, probably intermittent
P1219 b PCM/IDM CID stuck low CID circuit short to ground, probably intermittent
P1247 b MAP Turbo boost pressure low MAP hose, sensor, EBP sys, intake leaks, turbo
P1248 b MAP Turbo boost pressure not detected MAP hose, sensor, EBP sys, intake leaks, turbo
P1249 b WG Waste gate steady state failure GND short, plugged hose/port, solenoid, actuator
P1260 NA Electronic positive anti-theft system failure Refer to appropriate workshop manual.
P1261-P1268 INJ High to low side short cyl. # 1-8 Short circuit, shorted injector, failed IDM
P1271-P1278 INJ High to low side open cyl. # 1-8 Open circuit, open injector, failed IDM
P1280 a b ICP ICP circuit out of range low Open/grounded circuit, biased sensor, PCM
P1281 a b ICP ICP circuit out of range high Circuit shorted to 5v, biased sensor, PCM
P1282 a b IPR Excessive ICP pressure Faulty IPR regulator (sticking), IPR short to ground
P1283 IPR IPR circuit failure Open/grounded circuit, stuck IPR, loose connection
P1284 N/A ICP failure aborts KOER CCT test See codes P1280, P1281, P1282, P1283, P1211
P1291 INJ High side # 1 (right) short to grd. or B+ Short circuit, faulty IDM
P1292 INJ High side # 2 (left) short to grd. or B+ Short circuit, faulty IDM
P1293 INJ High side open bank No. 1 (right) Open circuit, faulty IDM
P1294 INJ High side open bank No. 2 (left) Open circuit, faulty IDM
P1295 a b INJ Multiple faults on bank No. 1 (right) Miswired connector or harness, short to ground
P1296 a b INJ Multiple faults on bank No. 2 (left) Miswired connector or harness, short to ground
P1297 INJ High sides shorted together Shorted wires, faulty IDM
P1298 PCED IDM failure Internal IDM failure
P1316 a b IDM Injector circuit/IDM codes detected Injector circuit failure/IDM codes detected
P1397 VPWR System voltage out of self test range Voltage too high or low for glow plug monitor test
P1464 N/A A/C on during KOER CCT test Operator error, A/C circuit shorted to power
P1501 N/A Vehicle moved during testing Operator error
P1502 TEST Invalid test APCM functioning APCM active while KOER test is running
P1531 N/A Invalid test accelerator pedal movement Accelerator moved during KOER on-demand or CCT test
P1536 PBA Parking brake applied fail Circuit, switch, PCM, failed to activate switch KOER
P1660 PCED OCC signal high High system voltage, internal PCM fault
P1661 PCED OCC signal low Low system voltage, internal PCM fault
P1662 PCED IDM EN circuit failure Open relay, blown fuse, open/grounded circuit
P1663 PCM/IDM FDCS circuit failure Open/grounded circuit, faulty IDM
P1667 PCM/IDM CID circuit failure Open/grounded circuit, faulty IDM
P1668 PCM/IDM PCM/IDM diag. communication error Open/shorted EF or FDCS wire, open IDM grd.
P1670 b EF EF signal not detected Open/shorted EF circuit
P1690 b WG Waste gate failure WGC circuit or solenoid, PCM
P1702 d TRS TRS sensor intermittent circuit malfunction Sensor, wiring, PCM, mechanical alignment
P1704 TRS Digital TRS failed to transition state Sensor, wiring, PCM, mechanical alignment
P1705 TR TR sensor out of self-test range Operator error, circuit failure, faulty sensor, PCM
P1711 TFT TFT sensor out of self-test range Circuit failure, faulty sensor, PCM
P1713 d TFT TFT stuck in range low below 50F Sensor, circuit, PCM
P1714 b SS1 Shift solenoid 1 inductive Circuit, solenoid, PCM
P1715 b SS2 Shift solenoid 2 inductive Circuit, solenoid, PCM
P1718 d TFT TFT stuck in range high above 250F Sensor, circuit, PCM
P1728 d TCC Transmission slip error Solenoid failure or mechanical failure
P1729 d 4x4L 4x4L low switch error Circuit failure, faulty switch, PCM
P1744 b TCC Converter not functioning Converter solenoid/hydraulic/mechanical failure
P1746 d EPC EPC solenoid open circuit Open circuit, faulty solenoid, PCM
P1747 b EPC EPC solenoid short circuit Short circuit, faulty solenoid, PCM shorted to ground
P1754 CCS Coast clutch solenoid ckt. malfunction Circuit failure, faulty solenoid, PCM
P1760 d EPC EPC solenoid short intermittent Switch not detected during self test, circuit, switch
P1780 TCS TCS circuit out of self-test range Circuit, switch, PCM, failed to activate switch KOER
P1781 4x4L 4x4L circuit out of self-test range Operator error, short to ground, PCM
P1783 d TFT Transmission overtemperature condition Internal trans. failure, circuit failure, sensor, PCM
P1902 e KDS Kickdown solenoid relay control circuit failure Blown fuse, failed relay, open control circuit, faulty PCM, faulty wiring
P1903 e KDS Kickdown solenoid circuit low voltage Blown fuse, failed relay, open control circuit, faulty PCM
P1904 e KDS Kickdown solenoid circuit high voltage Blown fuse, failed relay, open control circuit, faulty PCM, open in ASMM (circuit #175)

a MIL (FMEM) illuminates after first fault (Federal calibration only).
b MIL (OBDII) illuminates after second consecutive fault.
c Neutral switch for F650/750 with Allison AT545 auto transmission.
d Transmission control indicator (TCIL) flashes when fault is present.
e F-Series 650/750 with Allison AT545 automatic transmission.

PCED=Powertrain Control/Emissions Diagnosis Manual.