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Saturn fault codes: probable meanings

Codes specific to Saturn (often P1xxx, B1xxx, C1xxx, U1xxx). The manufacturer does not publish these meanings: they come from an open database and remain probable. The same code can have another meaning depending on the model or the year.

Codes: 402, from smallest to largest.

CodeProbable meaning
P1031HO2S Heater Current Monitor Control Circuit Sensors 1
P1032HO2S Heater Warm Up Control Circuit Sensors 1
P1105Secondary Vacuum Sensor Circuit
P1106MAP Sensor Circuit Intermittent High Voltage
P1107MAP Sensor Circuit Intermittent Low Voltage
P1108BARO To MAP Sensor Circuit Comparison Too High
P1109Secondary Port Throttle System
P1111Intake Air Temperature IAT Sensor Circuit Intermittent High Voltage
P1112Intake Air Temperature IAT Sensor Circuit Intermittent Low Voltage
P1113Intake Resonance Switchover Valve Circuit
P1114Engine Coolant Temperature ECT Sensor Circuit Intermittent Low Voltage
P1115Engine Coolant Temperature ECT Sensor Circuit Intermittent High Voltage
P1116ECT Signal Unstable Or Intermittent
P1117Engine Coolant Temp Signal Out-Of-Range Low
P1118Engine Coolant Temp Signal Out Of Range High
P1119ECT Signal Out Of Rage With TFT Sensor
P1120Throttle Position TP Sensor 1 Circuit
P1121TP Sensor Circuit Intermittent High Voltage
P1122TP Sensor Circuit Intermittent Low Voltage
P1125Accelerator Pedal Position APP System
P1130HO2S Circuit Low Variance Bank 1 Sensor 1
P1131HO2S Circuit Low Variance Bank 1 Sensor 2
P1132H02S Circuit Low Variance Bank 2 Sensor 1
P1133HO2S Insufficient Switching
P1134HO2S Transition Time Ratio
P1135HO2S Lean Average Bank 1 Sensor 1
P1136HO2S Rich Average Bank 1 Sensor 1
P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage
P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage
P1139HO2S Insufficient Switching Bank 1 Sensor 2
P1140HO2S Transition Time Ratio Bank 1 Sensor 2
P1141HO2S Bank 1 Sensor 2 Average Voltage Level
P1143HO2S Bank 1 Sensor 3 Lean Or Low Voltage
P1144HO2S Bank 1 Sensor 3 Rich Or High Voltage
P1145HO2S Cross Counts Bank 1 Sensor 3
P1153HO2S Insufficient Switching
P1154HO2S Transition Time Ratio
P1155HO2S Lean Average Bank 2 Sensor 1
P1156HO2S Rich Average Bank 2 Sensor 1
P1157HO2S Bank 2 Sensor 2 Lean System Or Low Voltage
P1158HO2S Bank 2 Sensor 2 Rich Or High Voltage
P1159HO2S Cross Counts Bank 2 Sensor 2
P1161HO2S Heater Power Stage Circuit Bank 2 Sensor 2
P1163HO2S Bank 2 Sensor 3 Lean System Or Low Voltage
P1164HO2S Bank 2 Sensor 3 Rich Or High Voltage
P1165HO2S Cross Counts Bank 2 Sensor 2
P1170Bank To Bank Fuel Trim Offset
P1171Fuel System Lean During Acceleration
P1185Engine Oil Temperature Circuit
P1186EOT Circuit Performance
P1187EOT Sensor Circuit Low Voltage
P1188EOT Sensor Circuit High Voltage
P1189Engine Oil Pressure Switch Circuit
P1190Engine Vacuum Leak
P1191Intake Air Duct Air Leak
P1200Injector Control Circuit
P1201Alternative Fuel Gas Mass Sensor Circuit Range Performance
P1202Alternative Fuel Gas Mass Sensor Circuit Low Frequency
P1203Alternative Fuel Gas Mass Sensor Circuit High Frequency
P1211Mass Air Flow Circuit Intermittent High
P1212Mass Air Flow Circuit Intermittent Low
P1214Injection Pump Timing Offset
P1215Ground Fault Detection Indicated
P1216Fuel Solenoid Response Time Too Short
P1217Fuel Solenoid Response Time Too Long
P1218Injection Pump Calibration Circuit
P1219Throttle Position Sensor Refernce Voltage
P1220Throttle Position TP Sensor 2 Circuit
P1221Throttle Position TP Sensor 1-2 Correlation
P1222Injector Control Circuit Intermittent
P1225Injector Circuit Cylinder 2 Intermittent
P1228Injector Circuit Cylinder 3 Intermittent
P1231Injector Circuit Cylinder 4 Intermittent
P1234Injector Circuit Cylinder 5 Intermittent
P1237Injector Circuit Cylinder 6 Intermittent
P1240Injector Circuit Cyllinder 7 Intermittent
P1243Injector Circuit Cylinder 8 Intermittent
P1245Intake Plenum Switchover Valve
P1250Early Fuel Evaporation Heater Circuit
P1257Supercharger System Overboost
P1258Engine Coolant Overtemperature Protection Mode Active
P1260Last Test Failed SCC Or Theft Detected Vehicle Immobilized
P1270Accelerator Pedal Position Sensor A/D Converter Error
P1271APP Sensor 1-2 Performance
P1272Accelerator Pedal Position Sensor 2
P1273Accelerator Pedal Position Sensor 1
P1274Injectors Wired Incorrectly
P1275Accelerator Pedal Position APP Sensor 1 Circuit
P1276Accelerator Pedal Position APP Sensor 1 Performance
P1277Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1278Accelerator Pedal Position Sensor 1 Circuit High Voltage
P1280Accelerator Pedal Position APP Sensor 2 Circuit
P1281Accelerator Pedal Position APP Sensor 2 Performance
P1282Accelerator Pedal Position Sensor 2 Circuit Low Voltage
P1283Accelerator Pedal Position Sensor 2 Circuit High Voltage
P1285Accelerator Pedal Position APP Sensor 3 Circuit
P1286Accelerator Pedal Position APP Sensor 3 Performance
P1287Accelerator Pedal Position Sensor 3 Circuit Low Voltage
P1288Accelerator Pedal Position Sensor 3 Circuit High Voltage
P1300Ignitor Circuit
P1305Ignition Coil 2 Primary Feedback Circuit
P1310Ignition Coil 3 Primary Feedback Circuit
P1315Ignition Coil 4 Primary Feedback Circuit
P1320IC Module 4X Ref Circuit Intermittent No Pulses
P1321Electronic Ignition System Fault Line
P1322EI System Or Ignition Control Missing
P132324X Reference Circuit Low Frequency
P1324Crank RPM Too Low
P1335CKP Circuit
P1336Crankshaft Position CKP System Variation Not Learned
P1345CKP CMP Correlation
P1346Intake Camshaft Position CMP Sensor System Performance
P1350Ignition Contol System
P1351IC Circuit High Voltage
P1352IC Output High Pulse Detected When Grounded Cyl.2
P1353IC Output High Pulse Detected When Grounded Cyl.3
P1354IC Output High Pulse Detected When Grounded Cyl.4
P1355IC Output High Pulse Detected When Grounded Cyl.5
P1356IC Output High Pulse Detected When Grounded Cyl.6
P1357IC Output High Pulse Detected When Grounded Cyl.7
P1358IC Output High Pulse Detected When Grounded Cyl.8
P1359Ignition Control Circuit Group A
P1360Ignition Control Circuit Group B
P1361IC Circuit Low Voltage
P1362IC Cylinder 2 Not Toggling After Enable
P1363IC Cylinder 3 Not Toggling After Enable
P1364IC Cylinder 4 Not Toggling After Enable
P1365IC Cylinder 5 Not Toggling After Enable
P1366IC Cylinder 6 Not Toggling After Enable
P1367IC Cylinder 7 Not Toggling After Enable
P1368IC Cylinder 8 Not Toggling After Enable
P1370IC Module 4X Reference Circuit Too Many Pulses
P1371DI Low Resolution Circuit
P1372Crankshaft Position Sensor Circuit Performance
P13743X Reference Circuit
P137524X Reference Circuit High Voltage
P1376Ignition Ground Circuit
P1377IC Module CAM Pulse To 4X Reference Pulse Comparison
P1380Misfire Detected Rough Road Data Not Available
P1381Misfire Detected No Communication with Brake Control Module
P1390Wheel Speed Sensor 1 G-Sensor Circuit
P1391Wheel Speed Sensor 1 G-Sensor Circuit Performance
P1392Wheel Speed Sensor 1 G-Sensor Circuit Low Voltage
P1393Wheel Speed Sensor 1 G-Sensor Circuit High Voltage
P1394Wheel Speed Sensor 1 G-Sensor Circuit Intermittent
P1395Wheel Speed Sensor 2 G-Sensor Circuit
P1396Wheel Speed Sensor 2 G-Sensor Circuit Performance
P1397Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage
P1398Wheel Speed Sensor 2 G-Sensor Circuit High Voltage
P1399Wheel Speed Sensor 2 G-Sensor Circuit Intermittent
P1403Exhaust Gas Recirculation System Valve 1
P1404Exhaust Gas Recirculation System Valve 2
P1405Exhaust Gas Recirculation System Valve 3
P1406EGR Valve Pintle Position Circuit
P1407EGR Air Intrusion In Exhaust Supply To EGR Valve
P1408Intake Manifold Pressure Sensor Circuit
P1409EGR Vacuum System Leak
P1410Fuel Tank Pressure System
P1415Secondary Air Injection AIR System
P1416AIR System Bank 1
P1418Secondary Air Injection System Relay A Control Circuit High
P1420Intake Air Low Pressure Switch Circuit Low Voltage
P1421Intake Air Low Pressure Switch Circuit High Voltage
P1423Intake Air High Pressure Switch Circuit High Voltage
P1431Fuel Level Sensor 2 Performance
P1432Fuel Level Sensor 2 Circuit Low Voltage
P1433Fuel Level Sensor 2 Circuit High Voltage
P1441Evaporative Emission EVAP System Flow During Non-Purge
P1442EVAP Vacuum Switch High Voltage During Ignition On
P1450Barometric Pressure Sensor Circuit
P1451Barometric Pressure Sensor Performance
P1460Cooling Fan Control System
P1480Cooling Fan 1 Control Circuit High
P1483Engine Coolilng System Performance
P1500Starter Signal Circuit
P1501Vehicle Speed Sensor Circuit Intermittent
P1502Theft Deterrent System No Password Received
P1503Theft Deterrent System Password Incorrect
P1504Vehicle Speed Output Circuit
P1508IAC System Low RPM
P1509IAC System High RPM
P1510Back UP Power Supply
P1511Throttle Control System Backup System Performance
P1514Throttle Body Performance
P1515Control Module Throttle Actuator Position Performance
P1516Throttle Actuator Control TAC Module Throttle Actuator Position Performance
P1517Throttle Actuator Control TAC Module Performance
P1518Throttle Actuator Control TAC Module Serial Data Circuit
P1519Electronic Throttle Module Low Volts Communication Disable
P1520Gear Indicator System
P1521Transmission Engaged At High Throttle Angle
P1522Park Neutral To Drive Reverse At High RPM
P1523Electronic Throttle Control Throttle Return
P1524TP Sensor Learned CI Throttle Angle Out Of Range
P1525Throttle Body Service Required
P1526TP Sensor Learn Not Complete
P1527Transmission Range Pressure Switch Comparison
P1528Governor
P1529Heated Windshield Request Problem
P1530Ignition Timing Adjustment Switch Circuit
P1531A/C Low Side Temerature Sensor Fault
P1532A/C Evaporator Temperature Sensor Circuit Low Voltage
P1533A/C Evaporator Temperature Sensor Circuit High Voltage
P1534A/C High Side Temperature Sensor Low Voltage
P1535A/C High Side Temperature Sensor Circuit
P1536A/C System ECT Overtemperature
P1537A/C Request Circuit Low Voltage
P1538A/C Request Circuit High Voltage
P1539Air Conditioning A/C Clutch Feedback Circuit High Voltage
P1540A/C System High Pressure
P1541A/C High Side Over Temperature
P1542A/C System High Pressure High Temperature
P1543A/C System Performance
P1544A/C Refrigerant Condition Very Low
P1545A/C Clutch Relay Control Circuit
P1546Air Conditioning A/C Clutch Feedback Circuit Low Voltage
P1547A/C System Performance Degraded
P1548A/C Recirculation Circuit
P1554Cruise Engaged Circuit High Voltage
P1555Electronic Variable Orifice Output
P1558Cruise Control Servo Indicates Low
P1559Cruise Control Power Mangement Mode
P1560Cruise Control System Transaxle Not In Drive
P1561Cruise Vent Solenoid
P1562Cruise Vacuum Solenoid
P1563Cruise Vehicle Speed Set Speed Difference Too High
P1564Cruise Control System Vehicle Accel Too High
P1565Cruise Servo Position Sensor
P1566Cruise Control System Engine RPM Too High
P1567Cruise Control System Active Braking Control Active
P1568Cruise Servo Stroke Greater Than Commanded In Cruise
P1569Cruise Servo Stroke High While Not In Cruise
P1570Cruise Control System Traction Control Active
P1571TCS PWM Circuit No Frequency
P1572ASR Active Circuit Low Too Long
P1573PCM EBTCM Serial Data Circuit
P1574Stoplamp Switch Circuit
P1575Extended Travel Brake Switch Circuit
P1576BBV Sensor Circuit High Voltage
P1577BBV Sensor Circuit Low Voltage
P1578BBV Sensor Circuit Low Vacuum
P1579P/N To D/R At High Throttle Angle
P1580Cruise Move Circuit Low Voltage
P1581Cruise Move Circuit High Voltage
P1582Cruise Direction Circuit Low Voltage
P1583Cruise Direction Circuit High Volume
P1584Cruise Control Disabled
P1585Cruise Inhibit Control Circuit
P1586Cruise Control Brake Switch 2 Circuit
P1587Cruise Control Clutch Control Circuit Low
P1588Cruise Control Clutch Control Circuit High
P1599Engine Stall Or Near Stall Detected
P1600PCM Battery
P1601Serial Communication Problem With Devise 1
P1602Loss Of EBTCM Serial Data
P1603Loss Of SDM Serial Data
P1604Loss Of IPC Serial Data
P1605Loss Of HVAX Serial Data
P1606Serial Communication Problem With Device 6
P1607Serial Communication Problem With Devise 7
P1608Serial Communication Problem With Device 8
P1609Loss Of TCS Serial Data
P1610Loss Of PZM Serial Data
P1611Loss Of CVRTD Serial Data
P1612Loss Of IPM Serial Data
P1613Loss Of DIM Serial Data
P1614Loss Of RIM Serial Data
P1615Loss Of VTD Serial Data
P1617Engine Oil Level Switch Circuit
P1619Engine Oil Life Monitor Reset Circuit
P1620Low Coolant Circuit
P1621PCM Memory Performance
P1622Cylinder Select
P1623Transmission Temp Pull-Up Resistor
P1624Customer Snapshot Data Available
P1625PCM System Reset
P1626Theft Deterrent Fuel Enable Signal Lost
P1627A/D Performance
P1628ECT Pull-Up Resistor
P1629Theft Deterrent System Cranking Signal
P1630Theft Deterrent Learn Mode Active
P1631Theft Deterrent Start Enable Signal Not Correct
P1632Theft Deterrent System Fuel Disabled
P1633Ignition Supply Power Circuit Low Voltage
P1634Ignition 1 Power Circuit Low Voltage
P16355 Volt Reference 1 Circuit
P1636PCM Stack Overrun
P1637Generator L-Terminal Circuit
P1638Generator F-Terminal Circuit
P16395 Volt Reference 2 Circuit
P1640Driver 1 Input High Voltage
P1641FC Relay 1 Control Circuit
P1642FC Relay 2 And 3 Control Circuit
P1643Engine Speed Output Circuit
P1644TP Output Circuit
P1645EVAP Solenoid Output Circuit
P1646Driver 1 Line 6
P1647Driver 1 Line 7
P1650Driver 2 Input High Voltage
P1651Fan 1 Relay Control Circuit
P1652Powertrain Induced Chassis Pitch Output Circuit
P1653Oil Level Lamp Control Circuit
P1654Service Throttle Soon Lamp Control Circuit
P1655EVAP Purge Solenoid Control Circuit
P1656Driver 2 Line 6
P16571-4 Upshift Solenoid Control Circuit
P1658Starter Enable Relay Control Circuit
P1660Cooling Fans Control Circuit
P1661MIL Control Circuit
P1662Cruise Control Inhibit Control Circuit
P1663Oil Life Lamp Control Circuit
P16641-4 Upshift Lamp Control Circuit
P1665Driver 3 Line 5
P1666Driver 3 Line 6
P1667Reverse Inhibit Solenoid Control Circuit
P1669ABS Unit Expected
P1670Driver 4
P1671Driver 4 Line 1
P1672Low Engine Oil Level Lamp Control Circuit
P1673Engine Hot Lamp Control Circuit
P1674Tachometer Control Circuit
P1675EVAP Vent Solenoid Control Circuit
P1676Driver 4 Line 6
P1677Driver 4 Line 7
P1680Driver 5
P1681Driver 5 Line 1
P1682Driver 5 Line 2
P1683Driver 5 Line 3
P1684Driver 5 Line 4
P1685Driver 5 Line 5
P1686Driver 5 Line 6
P1687Driver 5 Line 7
P1689Delivered Torque Circuit Fault
P1690ECM Loop Overrun
P1691Coolant Gage Circuit Low Voltage
P1692Coolant Gage Circuit High Voltage
P1693Tachometer Circuit Low Voltage
P1694Tachometer Circuit High Voltag
P1695Remote Keyless Entry Circuit Low
P1696Remote Keyless Entry Voltage High
P1700Transmission MIL Request
P1701Transmission MIL Request Circuit
P1705P/N Signal Output Circuit
P1740Transmission Torque Reduction Request Circuit
P1743TP Signal From ECM
P1760ECM Supply Voltage Interrupted
P1779Engine Torque Delivered To TCM Signal
P1780Park Neutral Position PNP Switch Circuit Engine Torque Signal Circuit
P1790Transmission Control Module Checksum
P1791Transmission Control Module Loop
P1792Transmission Control Module Reprogrammable Memory
P1793Transmission Control Module Stack Overrun
P1795CAN Bus Throttle Body Position
P1800TCM Power Control Relay Circuit Open
P1801Performance Selector Switch Failure
P1804Ground Control Relay
P1810TFP Valve Position Switch Circuit
P1811Maximum Adapt And Long Shift
P1812Transmission Over Temperature Condition
P1813Torque Control
P1814Torque Converter Overstressed
P1815Transmission Range Switch Start In Wrong Range
P1816TFP Valve Position Switch Park Neutral With Drive Ratio
P1817TFP Valve Position Switch Reverse With Drive Ratio
P1818TFP Valve Position Switch Drive Without Drive Ratio
P1819Internal Mode Swtich No Start Wrong Range
P1820Internal Mode Switch Circuit A Low
P1822Internal Mode Switch Circuit B High
P1823Internal Mode Switch Circuit P Low
P1825Internal Mode Switch Illegal Range
P1826Internal Mode Switch Circuit C High
P1831PC Solenoid Power Circuit Low Voltage
P1833A/T Solenoids Power Circuit Low Voltage
P1835Kick-Down Switch
P1836Kick-Down Switch Failed Open
P1837Kick-Down Switch Failed Short
P18421-2 Shift Solenoid Circuit Low Voltage
P18431-2 Shift Solenoid Circuit High Voltage
P1844Torque Reduction Signal Circuit Desired By TCM
P1845Transmission Gear Ratio Output Circuit
P18472-3 Shift Solenoid Circuit High Voltage
P1850Brake Band Apply Solenoid Circuit
P1851Brake Band Apply Solenoid Performance
P1852Brake Band Apply Solenoid Low Voltage
P1853Brake Band Apply Solenoid High Voltage
P1860TCC PWM Solenoid Circuit Electrical
P1864Torque Converter Clutch Circuit
P1868Transmission Fluid Life
P1870Transmission Component Slipping
P1871Undefined Gear Ratio
P1873TCC Stator Temp Switch Circuit Low
P1874TCC Stator Temp Switch Circuit High
P18754WD Low Switch Circuit
P1884TCC Enable Shift Light Circuit
P1886Shift Timing Solenoid
P1887TCC Release Switch Circuit
P1890ECM Data Input Circuit
P1891Throttle Position Sensor PWM Signal Low
P1892Throttle Position Sensor PWM Signal High
P1893Engine Torque Signal Low Voltage
P1894Engine Torque Signal High Voltage
P1895TCM To ECM Torque Reduction Circuit

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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.