Lincoln Continental – LS – Mark VIII – Navigator – Town Car (1995 – 2002) Trouble Code Info

Model Year Engine identification System
Continental 4.6L DOHC 1995-02 VIN  position 8 = V Ford EEC-V
Lincoln  LS  3.0L DOHC 2000-02 VIN  position 8 = S Ford EEC-V
Lincoln  LS  3.9L DOHC 2000-02 VIN  position 8 =  A Ford EEC-V
Mark VIII  4.6L DOHC 1996-98 VIN  position 8 = V Ford EEC-V
Navigator 5.4L SOHC 1998-99 VIN  position 8 = L/M Ford EEC-V
Navigator 5.4L DOHC 2000-02 VIN  position 8 = A/R Ford EEC-V
Town  Car 4.6L SOHC 1995-02 VIN  position 8 = W/9 Ford EEC-V

General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • Malfunction indicator lamp (MIL) will illuminate or flash if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.
Continental-LS1

Accessing

  • Trouble codes can only be displayed by using a Scan Tool connected to the data link connector(DLC):
  1. Continental/Lincoln LS/Mark VIII/Navigator 1.
  2. Town Car 2
Continental-LS2

Erasing

  • Trouble codes can only be erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

Scan code Fault location Probable cause
PO,P2,UO Refer to OBO-II trouble code tables
P1000 System readiness test not complete
P1001 Self-test
P1100 Mass air flow (MAF) sensor -circuit intermittent Wiring, MAF sensor
P1101 Mass air flow (MAF) sensor -signal malfunction Wiring, battery, MAF sensor, ECM
P1109 Intake air temperature (IAT) sensor 2 -circuit intermittent Wiring, IAT sensor, ECM
P1112 Intake air temperature (IAT) -circuit intermittent Wiring, IAT sensor, ECM
P1114 Intake air temperature (IAT) sensor 2 -low input \ Wiring short circuit to ground, IAT sensor, ECM
P1115 Intake air temperature (IAT) sensor 2 -high input Wiring, IAT sensor, ECM
P1116 D Cylinder head temperature (CHT) sensor -out of self-test range Wiring, cooling system fault, CHT sensor
P1116 H Engine coolant temperature (ECT) sensor signal malfunction Wiring, coolant thermostat, cooling system, ECT sensor, ECM
P1117 D Cylinder head temperature (CHT) sensor -out of self-test range Wiring, cooling system fault, CHT sensor
P1117 H Engine coolant temperature (ECT) sensor circuit intermittent Wiring, ECT sensor, cooling system, ECM
P1120 Throttle position (TP) sensor -signal malfunction,low Wiring, TP sensor, ECM
P1121 Throttle position (TP) sensor -inconsistent with mass air flow (MAF) sensor signal Wiring, MAF sensor, TP sensor, air leak
P1124 Throttle position (TP) sensor -signal malfunction Mechanical fault, TP sensor, ECM
P1125 Throttle position (TP) sensor -circuit intermittent Wiring, TP sensor
P1127 Self test not completed -heated oxygen sensor(H02S), not tested Engine not running long enough prior to self-test
P1128 Heated oxygen sensor (H02S) 1, bank 11 bank 2 -interchanged Wiring, connectors swapped
P1129 Heated oxygen sensor (H02S) 2, bank 1/ bank 2 -interchanged Wiring, connectors swapped
P1130 Heated oxygen sensor (H02S) 1, bank 1 fuel trim (FT), at limit Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1131 Heated oxygen sensor (H02S) 1, bank 1 -notswitching, fuel trim (FT) weak mixture Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1132 Heated oxygen sensor (H02S) 1, bank 1 -not switching, fuel trim (FT) rich mixture Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1137 Heated oxygen sensor (H02S) 2, bank 1 -not switching, fuel trim (FT) weak mixture Wiring, exhaust system leaking, H02S
P1138 Heated oxygen sensor (H02S) 2, bank 1 -not switching, fuel trim (FT) rich mixture Wiring, exhaust system leaking, H02S
P1150 Heated oxygen sensor (H02S) 1, bank 2 fuel trim (FT), at limit Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1151 Heated oxygen sensor (H02S) 1, bank 2 -not switching, fuel trim (FT) weak mixture Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression,ECM
P1152 Heated oxygen sensor (H02S) 1, bank 2 -not switching, fuel trim (FT) rich mixture Wiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression,ECM
P1157 Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) weak mixture Wiring, exhaust system leaking, H02S
P1158 Heated oxygen sensor (H02S) 2, bank 2 -not switching, fuel trim (FT) rich mixture Wiring, exhaust system leaking, H02S
P1168 Fuel rail pressure sensor -signal low Wiring, fuel level, low fuel pressure, fuel rail pressure sensor
P1169 Fuel rail pressure sensor -signal high Wiring, high fuel pressure, fuel rail pressure sensor
P1180 Fuel delivery system -pressure low Fuel filter blocked, fuel supply blocked
P1181 Fuel delivery system -pressure high Fuel pressure regulator
P1183 Engine oil temperature (EOT) sensor -circuit malfunction Wiring, EOT sensor, ECM
P1184 Engine oil temperature (EOT) sensor -out of self-test range Wiring, EOT sensor, ECM
P1220 Throttle control system (traction control) malfunction Wiring, throttle position motor, mechanical fault,TP sensor, ECM
P1224 Throttle position (TP) sensor (traction control),voltage out of range Wiring, mechanical fault, TP sensor
P1229 Supercharger (SC) intercooler pump Wiring, SC intercooler pump, SC intercooler pump relay, ECM
P1230 Fuel pump/variable load control module -circuitintermittent Wiring
P1231 Fuel pump -circuit malfunction Wiring, fuel pump relay
P1232 Low speed fuel pump -malfunction Wiring, low speed fuel pump relay, ECM
P1233 Fuel system -malfunction Wiring, IFS switch, fuel pump, fuel pump control module, ECM
P1234 Fuel system -malfunction Wiring, IFS switch, fuel pump, fuel pump control module, ECM
P1235 Fuel pump control -signal malfunction Wiring, fuel pump, fuel pump control module, ECM
P1236 Fuel pump control -signal malfunction Wiring, fuel pump, fuel pump control module,ECM
P1237 Fuel pump -circuit malfunction Wiring, fuel pump, fuel pump relay, fuel pump control module
P1238 Fuel pump -circuit malfunction Wiring, fuel pump, fuel pump relay, fuel pump control module
P1244 Altemator -low input Wiring, alternator, drive belt, ECM
P1245 Altemator -high input Wiring, alternator, ECM
P1246 Alternator Wiring, alternator, drive belt, ECM
P1260 Theft detected -vehicle immobilized
P1270 Maximum engine RPM or vehicle speed limit reached Engine over revved in neutral, wheel slippage
P1285 Cylinder head temperature (CHT) sensoroverheat condition Wiring, cooling system fault, CHT sensor
P1288 Cylinder head temperature (CHT) sensor -out of self-test range Wiring, cooling system fault, CHT sensor
P1289 Cylinder head temperature (CHT) sensor high input Wiring, cooling system fault, CHT sensor
P1290 Cylinder head temperature (CHT) sensor -lowinput Wiring, cooling system fault, CHT sensor
P1299 Cylinder head temperature (CHT) sensor over temperature condition Wiring, cooling system fault, CHT sensor
P1309 Misfire monitor disabled CMP sensor, CKP sensor, ECT sensor, MAF sensor, ECM
P1351 Ignition system diagnostic monitor -input circuit malfunction Wiring, ECM
P1352 Ignition coil 1, primary -circuit malfunction Wiring, spark plug(s), ignition coil, ICM
P1353 Ignition coil 2, primary -circuit malfunction Wiring, spark plug(s), ignition coil, ICM
P1354 Ignition coil 3, primary -circuit malfunction Wiring, spark plug(s), ignition coil, ICM
P1355 Ignition coil 4, primary -circuit malfunction Wiring, spark plug(s), ignition coil, ICM
P1358 Ignition system diagnostic monitor -out of self-test range Wiring, ignition coil, ECM
P1359 Ignition system -spark output (SPOUT) signal -circuit malfunction Wiring, ECM
P1364 Ignition coil, primary -circuit malfunction Wiring, spark plug(s), ignition coil, ICM
P1380 Camshaft position (CMP) actuator -circuit malfunction Wiring, CMP actuator, ECM
P1381 Camshaft position (CMP) actuator, bank 1 timing over advanced Wiring, timing belt/chain, CMP actuator, low oil pressure
P1383 Camshaft position (CMP) actuator, bank 1 timingover retarded Wiring, timing belt/chain, CMP actuator
P1390 Octane adjustment Octane adjustment connector, ECM
P1400 Exhaust gas recirculation (EGR) pressure sensor circuit malfunction, low input Wiring, EGR pressure sensor, ECM
P1401 Exhaust gas recirculation (EGR) pressure sensorcircuit malfunction, high input Wiring, EGR pressure sensor, ECM
P1403 Exhaust gas recirculation (EGR) pressure sensor Pressure hoses reversed
P1405 Exhaust gas recirculation (EGR) system -upstream hose off or plugged EGR hoses
P1406 Exhaust gas recirculation (EGR) system downstream hose off or blocked EGR hoses
P1407 Exhaust gas recirculation (EGR) solenoid Wiring, hose leak/blockage, EGR solenoid, EGR valve position sensor, ECM
P1408 Exhaust gas recirculation (EGR) system -out of self-test range Wiring, EGR hoses, EGR valve, EGR solenOid, ECM
P1409 Exhaust gas recirculation (EGR) solenoid -circuit malfunction Wiring, EGR solenoid, ECM
P1411 Secondary air injection (AIR) system malfunction AIR hoses, AIR pump, AIR solenoid
P1413 Secondary air injection monitor circuit -low input Wiring, AIR solenoid, AIR pump, ECM
P1414 Secondary air injection monitor circuit -high input Wiring, AIR solenoid, ECM
P1442 Evaporative emission (EVAP) system -small leakdetected Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
P1443 Evaporative emission (EVAP) system -malfunction Wiring, EVAP system hoses, EVAP canister, EVAP canister purge valve
P1444 Evaporative emission (EVAP) system -low input Wiring, EVAP pressure sensor, ECM
P1445 Evaporative emission (EVAP) system -high input Wiring, EVAP pressure sensor, ECM
P1450 Evaporative emission (EVAP) system, vent control -circuit malfunction Wiring, EVAP system hoses, EVAP canister purge valve, fuel filler cap blocked
P1451 Evaporative emission (EVAP) canister purge valve -circuit malfunction Wiring, EVAP canister purge valve, ECM
P1452 Evaporative emission (EVAP) system -unable to bleed fuel tank vacuum Wiring, EVAP system hoses, EVAP canister purge valve, fuel filler cap blocked
P1455 Evaporative emission (EVAP) system malfunction Fuel filler cap blocked, EVAP system hoses
P1460 Wide open throttle (WOT) relay, NC circuit malfunction Wiring, WOT relay, ECM
P1461 A/C refrigerant pressure sensor -high voltage Wiring, A/C refrigerant pressure sensor, ECM
P1462 A/C refrigerant pressure sensor -low voltage Wiring, A/C refrigerant pressure sensor, ECM
P1463 A/C refrig~rant pressure sensor -insufficientpressure change Wiring, A/C system -mechanical fault, A/C refrigerant pressure sensor, A/C compressor clutch
P1464 A/C demand -signal out of self-test range Wiring, A/C ON -during self-test, WOT relay (A/C cut-out), ECM
P1469 Frequent A/C compressor clutch cycling Wiring, A/C system -mechanical fault
P1473 Engine coolant blower motor -circuit malfunction Wiring open circuit/short circuit to positive, engine coolant blower motor, variable load control module
P1474 Engine coolant blower motor (low speed) control circuit malfunction Wiring, engine coolant blower motor relay, ECM
P1477 Engine coolant blower motor (medium speed) -control circuit malfunction Wiring, engine coolant blower motor relay, ECM
P1479 Engine coolant blower motor (high speed) controlcircuit malfunction Wiring, engine coolant blower motor relay, ECM
P1480 Engine coolant blower motor (low speed) with lowspeed fan ON Wiring, engine coolant blower motor relay
P1481 Engine coolant blower motor (low speed) with high speed fan ON Wiring, engine coolant blower motor relay
P1483 Engine coolant blower motor -intermittent fault Wiring, engine coolant blower motor, variable load control module
P1484 Variable load control module -malfunction Wiring open circuit, variable load control module
P1500 Vehicle speed sensor (VSS) -circuit intermittent Wiring, VSS, ECM
P1501 Vehicle speed. sensor (VSS) out of self-test range Electro-magnetic interference
P1502 Vehicle speed sensor (VSS) -intermittent signal Wiring, VSS/ABS wheel speed sensors
P1504 Idle air control (lAC) valve -circuit malfunction Wiring, lAC valve, intake system leaking, ECM
P1505 Idle air control (lAC) system -air trim, at limit Intake system leaking, air filter blocked, throttle body, lAC valve
P1506 Idle air control (lAC) valve -over-speed error Wiring, lAC valve, vacuum leaks, ECM
P1507 Idle air control (lAC) valve -under-speed error Wiring, lAC valve, hose blocked, ECM
P1512 Intake manifold runner control (IMRC) module -malfunction, stuck closed – Mechanical fault
P1513 Intake manifold runner control (IMRC) module -malfunction, stuck closed – Mechanical fault
P1516 Intake manifold runner control (IMRC) module -input error (bank 1) Wiring, mechanical fault
P1517 Intake manifold runner control (IMRC) module -input error (bank 2) Wiring, mechanical fault
P1518 Intake manifold runner control (IMRC) module -malfunction, stuck open Wiring, IMRC actuator, ECM
P1519 Intake manifold runner control (IMRC) module -malfunction, stuck closed Wiring, IMRC actuator, ECM
P1520 Intake manifold runner control (IMRC) module -circuit malfunction Mechanical fault, vacuum hoses, IMRC actuator, ECM
P1530 Ale compressor clutch -circuit malfunction Wiring open circuit/short circuit to positive, A/C compressor clutch, variable load control module
P1537 Intake manifold runner control (IMRC) module -malfunction, stuck closed Wiring, mechanical fault, ECM
P1538 Intake manifold runner control (IMRC) module -malfunction, stuck closed Wiring, mechanical fault, ECM
P1539 A/C compressor clutch -circuit malfunction Wiring, A/C compressor clutch, variable load control module
P1549 Intake manifold air control system -malfunction Wiring, intake manifold air control solenoid, ECM
P1550 Power steering pressure (PSP) sensor malfunction Wiring, PSP sensor, ECM
P1565 Cruise control system Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1566 Cruise control system Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1567 Cruise control system Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1568 Cruise control system Wiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1572 Brake pedal position (BPP) switch -out of self-test range Wiring, lights control module, BPP switch, ECM
P1605 ‘Keep alive’ memory test failure Wiring, battery terminal corrosion, loose battery connection, ECM
P1625 Variable load control module, power supply to engine coolant blower motor -circuit malfunction Wiring, variable load control module
P1626 Variable load control module, power supply to A/C system -circuit malfunction Wiring, variable load control module
P1633 ‘Keep alive’ power supply -voltage too low Wiring, ECM
P1635 Tire/axle ratio out of range Incorrect tire size, incorrect axle ratio, incorrect vehicle ID configuration
P1636 Engine control module (ECM) -internal fault ECM
P1640 Diagnostic trouble codes stored P-codes stored in another control module
P1641 Fuel pump -circuit malfunction Wiring, fuel pump relay, fuel pump, ECM
P1650 Power steering pressure (PSP) switch -malfunction Wiring, P5P switch, steering wheel turned during self-test, ECM
P1651 Power steering pressure (PSP) switch -input Wiring, vehicle towed with engine running, P5P switch, DTC not erased, ECM
P1700 Transmission system -malfunction Transmission
P1701 Transmission system -reverse engagement error Transmission
P1702 Transmission range (TR) sensor -circuitintermittent Wiring, TR sensor
P1703 Brake pedal position (BPP) switch -out of self-test range Wiring, brake pedal depressed during self-test, rear electronic modulellights control module, BPP switch, ECM
P1704 Transmission range (TR) sensor -malfunction Wiring, TR sensor
P1705 Park/neutral position (PNP) switch/clutch pedalposition (CPP) switch Wiring, PNP switch, CPP switch, ECM
P1709 Park/neutral position (PNP) switch/clutch pedal position (CPP) switch -out of self-test range Wiring, PNP switch/CPP switch, ECM
P1710 Transmission fluid temperature (TFT) sensor mid range failure Wiring, TFT sensor
P1711 Transmission fluid temperature (TFT) sensor out of self-test range Wiring, TFT sensor, fluid level, ECM
P1713 Transmission fluid temperature (TFT) sensor low range failure Wiring, TFT sensor
P1714 Shift solenoid (SS) A -inductive malfunction Wiring, 55, ECMITCM
P1715 8hift solenoid (88) B -inductive malfunction Wiring, 55, ECMITCM
P1716 Shift solenoid (88) C -inductive malfunction Wiring, 55, ECMITCM
P1717 Shift solenoid (SS) D -inductive malfunction Wiring, 55, ECMITCM
P1718 Transmission fluid temperature (TFT) sensor highrange failure Wiring, TFT sensor
P1719 Overdrive speed sensor -circuit malfunction Wiring, overdrive speed sensor, TCM
P1728 Torque converter clutch (TCC) -slip fault TCC
P1729 4x4L switch -malfunction Wiring, four wheel drive shift control module, ECM
P1740 Torque converter clutch (TCC) solenoid -circuit malfunction Wiring, TCC solenoid, ECMITCM
P1741 Torque converter clutch (TCC) -control error Wiring, TCC, TCM
P1742 Torque converter clutch (TCC) solenoid Wiring, TCC solenoid
P1743 Torque converter clutch (TCC) solenoid Wiring, TCC solenoid
P1744 Torque converter clutch (TCC) -malfunction Wiring, TCC, TCM
P1745 Transmission fluid pressure (TFP) solenoid -circuit malfunction Wiring, TFP solenoid, TCM, ECM
P1746 Transmission fluid pressure (TFP) solenoid -circuit malfunction Wiring, TFP solenoid, TCM, ECM
P1747 Transmission fluid pressure (TFP) solenoid -circuit malfunction Wiring short circuit, TFP solenoid, TCM
P1749 Transmission fluid pressure (TFP) solenoid -malfunction Wiring, TFP solenoid, TCM
P1751 Shift solenoid (SS) A -performance Wiring, SS
P1754 Coast dutch solenoid -circuit malfunction Wiring, coast clutch solenoid
P1756 Shift solenoid (SS) 8 -performance Wiring, S8
P1760 Transmission fluid pressure (TFP) solenoid -short circuit Wiring, TFP solenoid, TCM
P1761 Shift solenoid (SS) C -performance Wiring, 55
P1762 Overdrive band failed/off Transmission
P1767 Torque converter clutch (TCC) -circuit malfunction Wiring, TCC, TCM
P1780 Overdrive selection switch Wiring, transmission control switch, ECM
P1781 4x4L switch -out of self-test range Wiring, four wheel drive shift control module, 4x4L switch, ECM
P1783 Transmission fluid temperature (TFT) sensor overheating condition Wiring, TFT sensor, TCM, ECM
P1784 Transmission, reverselfirst gear -mechanical fault Transmission
P1785 Transmission, firsUsecond gear -mechanical fault Transmission
P1786 Gear selection, 3-2 -downshift malfunction Wiring, TR sensor, shift solenoids, transmission mechanical fault
P1787 Gear selection, 2-1 -downshift malfunction Wiring, TR sensor, shift solenoids, transmission mechanical fault
P1788 Transmission shift control valve, 3-2 downshift! coastdown downshift -open circuit Wiring, transmission shift control valve, TCM
P1789 Transmission shift control valve, 3-2 downshift! coastdown downshift -short circuit Wiring, transmission shift control valve, TCM
P1900 Output shaft speed (OSS) sensor -circuit intermittent Wiring, poor connection, 055 sensor, ECMITCM
P1901 Turbine shaft speed (TSS) sensor -circuit intermittent Wiring, poor connection, TSS sensor, ECMITCM
U1020 CAN data bus, A/C -A/C compressor clutchinvalid or missing data Wiring, A/C trouble code(s) stored
U1021 CAN data bus, A/C -communication error Wiring, A/C trouble code(s) stored, ECM
U1039 CAN data bus, antilock brake system (ASS) vehicle speed invalid or missing data Wiring, ASS trouble code(s) stored
U1041 CAN data bus, antilock brake system (ASS)vehicle speed invalid or missing data Wiring, ASS trouble code(s) stored
U1051 CAN data bus, engine control module (ECM) brake signal invalid or missing data Wiring, SPP switch, bulb(s)
U1073 CAN data bus, cooling system -communication error Wiring, variable load control module, ECM (alternative fuel) -if fitted, ECM
U1089 CAN data bus, active suspension -invalid or missing data Wiring, active suspension trouble code(s) stored
U1098 CAN data bus, antilock brake system(ASS)vehicle speed invalid or missing data Wiring, ASS trouble code(s) stored
U1130 CAN data bus, fuel pump -communication error Wiring, instrument panel, ECM
U1131 CAN data bus, fuel pump -communication error Wiring, instrument panel, ECM
U1135 CAN data bus, engine control module (ECM) -ignition switch invalid or missing data Wiring
U1147 CAN data bus, alarm Wiring, alarm system trouble code(s) stored
U1243 CAN data bus, A/C -invalid or missing data Wiring, A/C system trouble code(s) stored
U1256 CAN data bus -communication error Wiring, trouble code(s) stored in other control modules
U1262 CAN data bus -communication error Wiring, trouble code(s) stored in other control modules
U1341 CAN data bus, A/C -vehicle speed invalid or missing data Wiring, A/C trouble code(s) stored
U1451 CAN data bus, alarm Wiring, alarm system trouble code(s) stored
U2195 CAN data bus, lights control module -invalid or missing data Wiring, lights control module trouble code(s) stored
U2243 CAN data bus, A/C Wiring, A/C system trouble code(s) stored