| Mercury Codes |
|---|
|
| Trouble Code | Fault Location | Probable Cause |
|---|
P1000 – P1099 (Fuel and air metering and auxiliary emission control) | | P1000 | System readiness test not complete | – |
| P1001 | Self-test | – |
P1100 – P1199 (Fuel and air metering) | | P1100 | Mass air flow (MAF) sensor -circuit intermittent | Wiring, MAF sensor |
| P1101 | Mass air flow (MAF) sensor -signal malfunction | Wiring, battery, MAF sensor, ECM |
| P1102 | Mass Air Flow Sensor In Range But Lower Than Expected | |
| P1105 | Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor | Wiring, MAP/BARO sensor switch solenoid, hose connection(s), MAP sensorl BARO sensor |
| P1106 | Manifold Absolute Pressure Sensor Circuit Intermittent High Voltage | |
| P1107 | Dual Alternator Lower Circuit Malfunction | |
| 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 | Engine coolant temperature (ECT) sensor/cylinder head temperature (CHT) sensorout of self-test range | Wiring, cooling system fault, ECT sensor, CHT sensor, ECM |
| P1117 | Engine coolant temperature (ECT)sensor/cylinder head temperature (CHT) sensorcircuit intermittent | Wiring, cooling system fault, ECT sensor, CHT sensor, ECM |
| P1120 | Throttle position (TP) sensor -signal malfunction, low | Wiring, TP sensor |
| P1121 | Throttle position (TP) sensor inconsistent with mass air flow (MAF) sensor signal | Wiring, MAF sensor, TP sensor, air leak |
| P1123 | Throttle Position Sensor Circuit Intermittent High Voltage | |
| 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 1/ 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 not switching, 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 |
| P1133 | Bank 1 Fuel Control Shifted Lean | |
| P1136 | Crankshaft Position Sensor And Or Camshaft Position Sensor Input Signal to PCM Concerns | |
| 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 |
| P1140 | Water In Fuel Condition | |
| P1148 | Fuel trim (FT) -malfunction | Wiring, H02S, fuel system, ECM |
| 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 |
| P1156 | Engine control module (ECM)/fuel injector control module -malfunction | Wiring, fuel injector control module, 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 |
| P115E | Engine control module (ECM) -data transmission fault | Throttle position (TP), wiring, ECM |
| 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 |
| P117A | Engine control module (ECM) -engine oil temperature | Engine overheated, wiring, ECM |
| 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 -circuitmalfunction | Wiring, EOT sensor, ECM |
| P1184 | Engine oil temperature (EOT) sensor -out of self-test range | Wiring, EOT sensor, ECM |
P1200 – P1299 (Fuel and air metering – injector circuit) | | P1217 | Engine overheating | Wiring, ECT sensor, cooling system |
| P1229 | Supercharger (SC) intercooler pump | Wiring, SC intercooler pump, SC intercooler pump relay, ECM |
| P1230 | Low Speed Fuel Pump Fault Condition | |
| P1231 | High Speed Fuel Pump Relay Activated | |
| 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 pumpcontrol module |
| P1238 | Fuel pump -circuit malfunction | Wiring, fuel pump, fuel pump relay, fuel pump control module |
| P1243 | Second Fuel Pump Faulty Or Ground Fault | |
| P1244 | Alternator -high input | Wiring, alternator, ECM |
| P1245 | Alternator -low input | Wiring, drive belt, alternator, ECM |
| P1246 | Alternator | Wiring, alternator, drive belt, ECM |
| P1250 | Lack Of Power To Fuel Pressure Regulator Control Solenoid | |
| P1260 | Theft detected -vehicle immobilized | – |
| P1261 | Injector circuit, cylinder 1 -high to low side short | Wiring short circuit |
| P1262 | Injector circuit, cylinder 2 -high to low side short | Wiring short circuit |
| P1263 | Injector circuit, cylinder 3 -high to low side short | Wiring short circuit |
| P1264 | Injector circuit, cylinder 4 -high to low side short | Wiring short circuit |
| P1265 | Injector circuit, cylinder 5 -high to low side short | Wiring short circuit |
| P1266 | Injector circuit, cylinder 6 -high to low side short | Wiring short circuit |
| P1267 | Injector circuit, cylinder 7 -high to low side short | Wiring short circuit |
| P1268 | Injector circuit” cylinder 8 -high to low side short | Wiring short circuit |
| P1270 | Maximum engine RPM or vehicle speed limit reached | Engine over revved in neutral, wheel slippage |
| P1271 | Injector circuit, cylinder 1 -high to low side open | Wiring open circuit |
| P1272 | Injector circuit, cylinder 2 -high to low side open | Wiring open circuit |
| P1273 | Injector circuit, cylinder 3 -high to low side open | Wiring open circuit |
| P1274 | Injector circuit, cylinder 4 -high to low side open | Wiring open circuit |
| P1275 | Injector circuit, cylind_er ,5 -high to low side open | Wiring open circuit |
| P1276 | Injector circuit, cylinder 6 -high to low side open | Wiring open circuit |
| P1277 | Injector circuit, cylinder 7 -high to low side open | Wiring open circuit |
| P1278 | Injector circuit, cylinder 8 -high to low side open | Wiring open circuit |
| P1285 | Cylinder head temperature (CHT) sensor overheat 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 highinput | Wiring, cooling system fault, CHT sensor |
| P128A | Engine control module (ECM)/cylinder headtemperature (CHT) sensor -high input | Wiring, CHT sensor, ECM |
| P1290 | Cylinder head temperature (CHT) sensor -low input | Wiring, cooling system fault, CHT sensor |
| P1299 | Cylinder head temperature (CHT) sensor over temperature condition | Wiring, cooling system fault, CHT sensor |
P1300 – P1399 (Ignition system or misfire) | | P1309 | Misfire monitor disabled | CMP sensor, CKP sensor, ECT sensor, MAFsensor, ECM |
| P1320 | Ignition check signal misSing | Wiring, ignition system, CMP sensor |
| P1336 | Crankshaft position (CKP) sensor | Wiring, flywheel, CKP sensor |
| P1356 | Loss Of Ignition Diagnostic Module Input To PCM | |
| P1357 | Ignition Diagnostic Monitor Pulsewidth Not Defined | |
| P1358 | Ignition Diagnostic Monitor Signal Out of Self-Test Range | |
| P1359 | Spark Output Circuit Fault | |
| P1360 | Ignition Coil 'A' Secondary Circuit Malfunction | |
| P1361 | Ignition Coil 'B' Secondary Circuit Malfunction | |
| P1362 | Ignition Coil 'C' Secondary Circuit Malfunction | |
| P1363 | Ignition Coil 'D' Secondary Circuit Malfunction | |
| P1364 | Ignition Coil Primary Circuit Fault | |
| P1365 | Ignition Coil Secondary Circuit Failure | |
| P1380 | Camshaft position (CMP) actuator, bank 1 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 timing over retarded | Wiring, timing belt/chain, CMP actuator |
| P1385 | Camshaft position (CMP) actuator, bank 2 circuit malfunction | Wiring, CMP actuator, ECM |
| P1386 | Camshaft position (CMP) actuator, bank 2 timingover advanced | Wiring, timing belt/chain, CMP actuator, low oil pressure |
| P1388 | Camshaft position (CMP) actuator, bank 2 timingover retarded | Wiring, timing belt/chain, CMP actuator |
| P1390 | Octane adjustment | Octane adjustment connector, ECM |
| P1397 | System voltage -out of self-test range | Wiring, battery, alternator |
P1400 – P1499 (Emission control) | | P1400 | Exhaust gas recirculation (EGR) pressure sensor circuit malfunction, low input | Wiring, EGR pressure sensor, ECM |
| P1401 | Exhaust gas recirculation (EGR) temperature sensor | Wiring, EGR temperature sensor |
| P1402 | Exhaust gas recirculation (EGR) system -high flow rate | Wiring, EGR hose(s), EGR valve, ECM |
| P1403 | Differential Pressure Feedback Electronic Sensor 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 Flow Out Of Self-Test Range | |
| 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 |
| P1420 | Catalyst Temperature Sensor | |
| P1421 | Catalyst Damage | |
| P1422 | Exhaust Gas Ignition Temperature Sensor | |
| P1432 | Engine thermostat heater -circuit malfunction | Wiring, engine thermostat heater, ECM |
| P1436 | AlC evaporator temperature sensor -low input | Wiring, AlC evaporator temperature sensor, ECM |
| P1437 | AlC evaporator temperature sensor -high input | Wiring, AlC evaporator temperature sensor, ECM |
| P1440 | Evaporative emission (EVAP) system -small leak detected | Hose connection(s), fuel filler cap, EVAP canister, EVAP pressure sensor, MAP sensor/BARO sensor, fuel tank vent valve |
| P1442 | EVAP System Small Leak Detected | |
| 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 | Purge Flow Sensor Circuit High Condition | |
| P1446 | Evaporative emission (EVAP) canister purge valve -remains closed | Wiring, EVAP pressure sensor, EVAP canister purge valve |
| P1447 | Evaporative emission (EVAP) system -malfunction/leak detected | Wiring, EVAP canister purge valve, EVAP pressure sensor, EVAP canister, CTP switch, hoses blockedlleaking |
| P1448 | Evaporative emission (EVAP) canister purge valve -remains open | Wiring, EVAP pressure sensor, EVAP canister purge valve |
| P1450 | Evaporative emission (EVAP) system, ventcontrol -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 |
| P1455 | Evaporative Emission Control System Gross Leak Detected | |
| P145E | Positive crankcase ventilation (PCV) heater circuit malfunction | Wiring, PCV valve |
| P1460 | Wide open throttle (WOT) relay, AlC -circuit malfunction | Wiring, WOT relay, ECM |
| P1461 | AlC refrigerant pressure sensor -high voltage | Wiring, AlC refrigerant pressure sensor, ECM |
| P1462 | AlC refrigerant pressure sensor -low voltage | Wiring, AlC refrigerant pressure sensor, ECM |
| P1463 | AlC refrigerant pressure sensor -insufficient pressure change | Wiring, AlC system -mechanical fault, AlC refrigerant pressure sensor, AlC compressor clutch |
| P1464 | AlC demand -signal out of self-test range | Wiring, AlC ON -during self-test, WOT relay (AICcut-out), ECM |
| P1465 | Air Conditioning Relay Circuit Malfunction | |
| P1466 | A/C Refrigerant Temperature Sensor/Circuit Malfunction | |
| P1469 | Frequent AlC compressor clutch cycling | Wiring, AlC system -mechanical fault |
| P1473 | Fan Secondary High With Fans Off | |
| 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) -control circuit malfunction | Wiring, engine coolant blower motor relay, ECM |
| P1489 | Crankcase breather heater -circuit malfunction | Wiring, crankcase breather heater |
| P1490 | Evaporative emission (EVAP) canister purge valve bypass solenoid | Wiring, EVAP canister purge valve bypass solenoid |
| P1491 | Evaporative emission (EVAP) canister purge valve bypass solenoid -malfunction | Wiring, EVAP canister, vacuum hoses, EVAP pressure sensor, EVAP canister purge valve bypass solenoid |
| P1492 | Evaporative emission (EVAP) canister purge valve -circuit malfunction | Wiring, EVAP canister purge valve |
| P1493 | Evaporative emission (EVAP) canister purge valve -malfunction, stuck open | EVAP canister purge valve, vacuum hose(s), EVAP pressure sensor, EVAP canister vent valve |
P1500 – P1599 (Vehicle or idle speed control) | | P1500 | Vehicle speed sensor (VSS) -circuit intermittent | Wiring, VSS, ECM |
| P1501 | Vehicle speed sensor (VSS) -out of self-testrange | 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, ECM |
| P1505 | Idle Air Control System at Adaptive Clip | |
| 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 (bank 1) | Wiring, mechanical fault, ECM |
| P1513 | Intake manifold runner control (IMRC) module -malfunction, stuck closed (bank 2) | Wiring, mechanical fault, ECM |
| 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 |
| P151A | Intake manifold runner control (IMRC) module -malfunction | Wiring, IMRC actuator, ECM |
| P1520 | Intake manifold runner control (IMRC) module -circuit malfunction | Wiring, mechanical fault, vacuum hoses, IMRC actuator, ECM |
| P1537 | Intake manifold runner control (IMRC) module -malfunction, stuck open (bank 1) | Wiring, hoses blocked, mechanical fault, ECM |
| P1538 | Intake manifold runner control (IMRC) module -malfunction, stuck open (bank 2) | Wiring, hoses blocked, mechanical fault, ECM |
| P1548 | Engine Air Filter Restriction | |
| P1549 | Intake manifold air control system malfunction | Wiring, intake manifold air control solenoid, ECM |
| P1550 | Power steering pressure (PSP) sensormalfunction | Wiring, PSP sensor, ECM |
| P1561 | Brake Line Pressure Sensor Circuit | |
| 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 -circuit intermittent | Wiring, BPP switch, brake fluid pressure (BFP) switch, ECM |
| P1575 | Pedal Position Out of Self Test Range | |
| P1576 | Accelerator Pedal Position Sensor Signal Malfunction | |
| P1582 | Engine control module (ECM) -throttle data stored | Airbag deployment |
| P1588 | Throttle Control Unit Detected Loss of Return Spring | |
P1600 – P1699 (ECM – computer output circuit) | | P1605 | Engine control module (ECM)/transmission control module (T<;:M) communication error | Wiring, battery, TCM, ECM |
| 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 10 configuration |
| P1636 | Engine control module (ECM) -intemal fault | ECM |
| P1639 | Engine control module (ECM) -invalid or missing data | Incorrect vehicle 10 configuration, 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 |
| P1646 | Engine control module (ECM) -linear oxygen sensor (02S) control, bank 1 | Non OEM accessories, ECM programming, ECM |
| P1647 | Engine control module (ECM) -linear oxygen sensor (02S) control, bank 2 | Non OEM accessories, ECM programming, ECM |
| P1650 | Power steering pressure (PSP) switch -malfunction | Wiring, PSP switch, steering wheel turned during self-test, ECM |
| P1651 | Power steering pressure (PSP) switch -input | Wiring, vehicle towed with engine running, PSP switch, OlC not erased, ECM |
| P1674 | Engine control module (ECM) -malfunction | Wiring, software incompatibility, ECM |
P1700 – P1799 (Transmission) | | P1700 | Transmission System Problems | |
| P1701 | Fuel trim (FT) -malfunction | Intake leak, AIR system, fuel pressure/pump, injector(s), EGR system, H02S |
| 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 |
| P1705 | Throttle position (TP) switch/sensor | Wiring, TP switch, TCM, ECM |
| P1706 | Transmission range (TR) switch/park/neutralposition (PNP) switch -malfunction | Wiring, TR switch/PNP switch, TCM |
| P1709 | Park/neutral position (PNP) switch/clutch pedal position (CPP) switch -out of self-test range | Wiring, PNP switch/CPP switch, ECM |
| P1714 | Shift Solenoid 'A' Fault | |
| P1715 | Shift Solenoid 'B' Fault | |
| P1729 | 4x4L switch -malfunction | Wiring, four wheel drive shift control module, ECM |
| P1743 | Torque Converter Clutch Solenoid Failed On Conditions | |
| P1744 | Torque Converter Clutch System Stuck in Off Position | |
| P1760 | Overdrive clutch solenoid valve -circuit malfunction | Wiring, overdrive clutch solenoid valve |
| 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 Over-Temperature Condition | |
| P1793 | Ignition Supply Malfunction | |
P1800 – P1899 (Transmission) | | P1804 | Transmission 4-Wheel Drive High Indicator Circuit Failure | |
| P1806 | Transmission 4-Wheel Drive High Indicator Short Circuit To Battery | |
| P1807 | Transmission 4-Wheel Drive High Indicator Short Circuit To Ground | |
| P1808 | Transmission 4-Wheel Drive Low Indicator Circuit Failure | |
| P1809 | Transmission 4-Wheel Drive Low Indicator Open Circuit | |
| P1824 | Transmission 4-Wheel Drive Clutch Relay Circuit Failure | |
| P1828 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure | |
| P1829 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit | |
| P1830 | Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery | |
| P1832 | Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure | |
| P1834 | Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery | |
| P1838 | Transmission Transfer Case Shift Motor Circuit Failure | |
| P1839 | Transmission Transfer Case Shift Motor Open Circuit | |
| P1840 | Transmission Transfer Case Shift Motor Short Circuit To Battery | |
| P1852 | Brake Band Apply Solenoid Low Input Voltage | |
| P1857 | Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground | |
| P1858 | Transmission Transfer Case Contact Plate 'D' Circuit Failure | |
| P1859 | Transmission Transfer Case Contact Plate 'D' Open Circuit | |
| P1862 | Transmission Transfer Case Contact Plate Power Circuit Failure | |
| P1863 | Transmission Transfer Case Contact Plate Power Open Circuit | |
| P1866 | Transmission Transfer Case System Concern Servicing Required | |
| P1867 | Transmission Transfer Case Contact Plate General Circuit Failure | |
| P1869 | Lamp Air Bag Warning Indicator Circuit Open or Short to Ground | |
| P1876 | Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure | |
| P1877 | Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery | |
| P1878 | Transmission Transfer Case Disengaged Solenoid Circuit Failure | |
| P1881 | Engine Coolant Level Switch Circuit Failure | |
| P1882 | Engine Coolant Level Switch Circuit Short to Ground | |
| P1884 | Engine Coolant Level Lamp Circuit Short to Ground | |
| P1889 | Drive Train Axles Bearings Problem | |
P1900 – P1999 (Transmission) | | P1900 | Engine coolant blower motor -circuit malfunction | Wiring, engine coolant blower motor relay, engine coolant blower motor |
| P1901 | Turbine shaft speed (TSS) sensor -circuitintermittent | Wiring, poor connection, TSS sensor, ECMfTCM |
| P1910 | Reversing lamps -circuit malfunction | Wiring, reverse gear position switch, ECM |
| P1919 | Engine Coolant Temperature Signal | |
| P1922 | Fuel Additive Level Circuit Malfunction | |
| P1924 | Fuel Additive Level Circuit Low | |
| P1925 | CAN Data Bus TCS/ABS | |
| P1926 | Fuel Additive Level Circuit Range/Performance | |
| P1927 | Fuel Additive Level Too Low/Empty | |
| P1928 | Fuel Additive Level Pump Control Circuit/Open | |
| P1929 | Fuel Additive Level Pump Control Circuit Performance | |
| P1930 | Fuel Additive Level Too Low/Empty | |
| P1931 | Fuel Additive Pump Control Circuit/Open | |
| P1932 | Fuel Additive Pump Control Circuit Performance | |
| P1934 | Fuel Additive Pump Control Circuit High | |
| P1935 | Fuel Additive Level Low | |
| P1936 | Fuel Level Signal | |
| P1937 | Vehicle Speed Signal | |
| P1938 | Brake Switch/Sensor Signal | |
| P1939 | Clutch Switch/Sensor Signal | |
U1000 – U2000 (Manufacturer defined, common defination listed) | | U1020 | CAN data bus, NC NC compressor clutch invalid or missing data | Wiring, AlC trouble code(s) stored |
| U1021 | CAN data bus, AlC -communication error | Wiring, AlC trouble code(s) stored, ECM |
| U1039 | CAN data bus, antilock brake system (ABS)vehicle speed invalid or missing data | Wiring, ABS trouble code(s) stored |
| U1041 | CAN data bus, antilock brake system (ABS) vehicle speed invalid or missing data | Wiring, ABS trouble code(s) stored |
| U1051 | CAN data bus, engine control module (ECM) -brake signal invalid or missing data | Wiring, BPP switch, bulb(s) |
| U1089 | CAN data bus, active suspension -invalid ormissing data | Wiring, active suspension trouble code(s) stored |
| U1098 | CAN data bus, antilock brake system (ABS) vehicle speed invalid or missing data | Wiring, ABS 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 |
| U1137 | CAN data bus, instrument panel waming devices -invalid or missing data | Wiring, instrument panel |
| U1147 | CAN data bus, alarm | Wiring, alarm system trouble code(s) stored |
| U1243 | CAN data bus, AlC -invalid or missing data | Wiring, AlC system trouble code(s) stored |
| U1262 | CAN data bus -communication error | Wiring, trouble code(s) stored in other control modules |
| U1451 | CAN data bus, alarm | Wiring, alarm system trouble code(s) stored |
U2000 – U3000 (Manufacturer defined, common defination listed) | | U2015 | Signal link fault | Compuvalve/ECM (alternative fuel) |
| U2195 | CAN data bus, lights control module -invalid or miSSing data | Wiring, lights control module trouble code(s) stored |
