Diagnostic Trouble Code Index for October 2012
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Diagnostic Trouble Codes (DTC)
| Count | Trouble Code | Sample Definition | Manufacturers |
| 25 | P0300 | Multiple Cylinder Misfire Detected | Audi, Buick, Chevrolet, Dodge, Ford, GMC, Jeep, Mazda, Nissan, Pontiac, Volkswagen |
| 14 | P0171 | Fuel System Lean (Bank 1) | Chevrolet, Chrysler, Ford, Mercury, Pontiac, Volkswagen |
| 7 | P0172 | Fuel System Rich (Bank 1) | Chrysler, Ford, GMC, Pontiac, Suzuki, Volvo |
| 7 | P0303 | Cylinder 3 Misfire Detected | Chevrolet, Chrysler, Honda, Jeep, Volkswagen |
| 6 | P0340 | Camshaft Position Sensor Circuit Malfunction | Ford, Hyundai, Kia, Toyota |
| 5 | P0174 | Fuel System Lean (Bank 2) | Chevrolet, Ford |
| 5 | P0301 | Cylinder 1 Misfire Detected | Infiniti, Jeep, Land Rover, Mazda, Volkswagen |
| 5 | P0302 | Cylinder 2 Misfire Detected | Dodge, Jeep, Volkswagen |
| 4 | P0101 | MAF Sensor Performance | Chevrolet, Kia, Other GM |
| 4 | P0304 | Cylinder 4 Misfire Detected | Dodge, Ford, Jeep, Volkswagen |
| 4 | P0305 | Cylinder 5 Misfire Detected | Ford, Jeep, Volkswagen |
| 4 | P0404 | EGR Open Position Performance | Chevrolet, Honda |
| 3 | P0121 | TP Sensor Performance | Chevrolet, Other European, Scion |
| 3 | P0122 | TP Sensor Circuit Low Voltage | Chevrolet, Ford, Other European |
| 3 | P0175 | Fuel System Rich (Bank 2) | Chrysler, Ford, GMC |
| 3 | P0335 | Crankshaft Position Sensor Circuit Malfunction | Chevrolet, Hyundai, Nissan |
| 3 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Toyota |
| 3 | P0456 | EVAP System Very Small Leak Detected | Ford, Mercury, Toyota |
| 3 | P0507 | Idle Speed High | Chevrolet, Infiniti, Saturn |
| 3 | P1516 | TAC Module Throttle Actuator Position Performance | Cadillac, Chevrolet |
| 2 | P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction | Ford, Mercury |
| 2 | P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | Ford, Land Rover |
| 2 | P0161 | Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction | Cadillac, Suzuki |
| 2 | P0216 | Injection Timing Control Circuit Malfunction | Dodge, Volkswagen |
| 2 | P0275 | Cylinder 5 Balance System Malfunction | Ford |
| 2 | P0306 | Cylinder 6 Misfire Detected | Chrysler, Dodge |
| 2 | P0341 | CMP Sensor Performance | Dodge, Volkswagen |
| 2 | P0351 | Ignition Coil 1 Control Circuit Malfunction | Jeep, Mercury |
| 2 | P0354 | Ignition Coil 4 Control Circuit Malfunction | Ford, Mercury |
| 2 | P0402 | Excessive EGR Flow Detected | Ford, Toyota |
| 2 | P0442 | EVAP System Small Leak Detected | Chrysler, Toyota |
| 2 | P1121 | TP Sensor Circuit Intermittent High Voltage | Ford |
| 2 | P1174 | Fuel Trim Cylinder Balance | Chevrolet |
| 2 | P1545 | Air Conditioning Clutch Relay Control Circuit Malfunction | Audi |
| 2 | P2110 | Electronic Throttle Control - Forced Limited RPM | Hyundai, Suzuki |
| 2 | P2127 | Accelerator Pedal Position Sensor 2 Circuit Low Voltage | Hyundai, Nissan |
| 2 | P2290 | Injector Control Pressure Too Low | Ford |
| 2 | U0107 | Throttle Actuator Control Serial Data Circuit Malfunction | Cadillac, Isuzu |
| 1 | B0103 | Electronic front end sensor 2 performance | Chevrolet |
| 1 | B1503 | Turn signal right failure | Lincoln |
| 1 | B2477 | Null.do not know what it means. | Ford |
| 1 | B2799 | Engine Immobilizer System Malfunction | Toyota |
| 1 | B2879 | B1503b1499b1201- | Lincoln |
| 1 | B2958 | Security system sensor data circuit high | Chevrolet |
| 1 | B2960 | Security system sensor data incorrect but valid | Chevrolet |
| 1 | B2964 | Key in Ignition Circuit High | Chevrolet |
| 1 | B3128 | Driver door unlock output short to battery | Chevrolet |
| 1 | C0240 | EBCM fault/PCM indicates TCS fault | Pontiac |
| 1 | C1025 | can communication with engine control module is faulty | Mercedes-Benz |
| 1 | P0010 | Camshaft Position 'A' Actuator Circuit Malfunction (Bank 1) | Volkswagen |
| 1 | P0011 | Intake Camshaft Position System Performance | Hyundai |
| 1 | P0012 | Camshaft Position 'A' Over-Retarded (Bank 1) | Ford |
| 1 | P0014 | Exhaust Camshaft Position System Performance | Chevrolet |
| 1 | P0017 | Crankshaft Position - Exhaust Camshaft Position Correlation | GMC |
| 1 | P0021 | Camshaft Position 'A' Timing Over-Advanced / System Performance (Bank 2) | Hyundai |
| 1 | P0022 | Camshaft Position 'A' Timing Over-Retarded (Bank 2) | Ford |
| 1 | P0028 | Intake Valve Solenoid Circuit Range/Performance (Bank 2) | Subaru |
| 1 | P0030 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Control Circuit Malfunction | Volkswagen |
| 1 | P0089 | Fuel Pressure Regulator Performance | Saab |
| 1 | P0096 | Intake Air Temperature Sensor 2 Performance | Mercedes-Benz |
| 1 | P0102 | MAF Sensor Circuit Low Frequency | Cadillac |
| 1 | P0103 | MAF Sensor Circuit High Frequency | Mercedes-Benz |
| 1 | P0104 | Mass Airflow Sensor Circuit Intermittent | Mercedes-Benz |
| 1 | P0106 | MAP Sensor Performance | Chevrolet |
| 1 | P0107 | MAP Sensor Circuit Low Voltage | Saturn |
| 1 | P0110 | Intake Air Temperature Sensor Circuit Malfunction | Volkswagen |
| 1 | P0123 | TP Sensor Circuit High Voltage | Other European |
| 1 | P0132 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit High Voltage | Dodge |
| 1 | P0134 | Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity | Land Rover |
| 1 | P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage | Oldsmobile |
| 1 | P0141 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction | Chevrolet |
| 1 | P0160 | Heated Oxygen Sensor (Bank 2 Sensor 2) Insufficient Activity | Cadillac |
| 1 | P0176 | Loss Of Flexible Fuel Calibration Signal | Suzuki |
| 1 | P0179 | Fuel Composition Sensor High Frequency | Chevrolet |
| 1 | P0181 | Fuel Tank Temperature Sensor Range/Performance | Volvo |
| 1 | P0203 | Fuel Injector 3 Control Circuit Malfunction | Chrysler |
| 1 | P0277 | Fuel Injector 6 Control Circuit High Voltage | Ford |
| 1 | P0278 | Cylinder 6 Balance System Malfunction | Ford |
| 1 | P0299 | Turbocharger Engine Underboost | Chevrolet |
| 1 | P0320 | No Crank Reference Signal To PCM | Dodge |
| 1 | P0328 | Knock Sensor Circuit High Voltage (Bank 1) | Nissan |
| 1 | P0345 | Camshaft Position Sensor 'A' Circuit Malfunction (Bank 2) | Ford |
| 1 | P0352 | Ignition Coil 2 Control Circuit Malfunction | Mercury |
| 1 | P0353 | Ignition Coil 3 Control Circuit Malfunction | Ford |
| 1 | P0401 | Insufficient EGR Flow Detected | Ford |
| 1 | P0411 | Secondary AIR System Incorrect Airflow Detected | Volkswagen |
| 1 | P0421 | Warmup Catalyst Efficiency Low (Bank 1) | Volkswagen |
| 1 | P0430 | Catalyst System Low Efficiency (Bank 2) | GMC |
| 1 | P0431 | Warmup Catalyst Efficiency Low (Bank 2) | Volkswagen |
| 1 | P0440 | General EVAP System Failure | Chevrolet |
| 1 | P0448 | EVAP Canister Vent Control Valve Closed | Subaru |
| 1 | P0449 | EVAP Vent Solenoid Control Circuit Malfunction | Hyundai |
| 1 | P0451 | Fuel Tank Pressure Sensor Performance | Mercury |
| 1 | P0453 | Fuel Tank Pressure Sensor Circuit High Voltage | Subaru |
| 1 | P0455 | EVAP System Large Leak Detected | Saturn |
| 1 | P0480 | Cooling Fan Relay 1 Control Circuit Malfunction | Ford |
| 1 | P0491 | Secondary AIR System Insufficient Flow Detected (Bank 1) | Audi |
| 1 | P0492 | Secondary air flow bank 2 | Audi |
| 1 | P0500 | Vehicle Speed Sensor Circuit Malfunction | Lexus |
| 1 | P0506 | Idle Speed Low | Saturn |
| 1 | P0509 | Idle Air Control Motor Sense Circuit High Voltage | Saturn |
| 1 | P0601 | Control Module Read Only Memory | Dodge |
| 1 | P0607 | Control Module Performance | Pontiac |
| 1 | P0608 | Vehicle Speed Output Circuit Malfunction | Cadillac |
| 1 | P0611 | Fuel Injector Control Module Performance | Ford |
| 1 | P0638 | Throttle Actuator Control Command Performance | Saab |
| 1 | P0675 | Glow Plug No. 5 Control Circuit Malfunction | Chevrolet |
| 1 | P0706 | Transmission Range Switch Circuit Malfunction | Saturn |
| 1 | P0746 | Pressure Control Solenoid Valve 'A' Stuck Off | Mercedes-Benz |
| 1 | P0750 | Low/Reverse Solenoid Circuit Malfunction | Mercedes-Benz |
| 1 | P0851 | Park Neutral Position Switch Circuit Low Voltage | Subaru |
| 1 | P1054 | unknown | Volvo |
| 1 | P1122 | TP Sensor Circuit Intermittent Low Voltage | Chevrolet |
| 1 | P1126 | Magnetic Clutch Circuit Malfunction | Toyota |
| 1 | P1131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Lean | Ford |
| 1 | P1132 | Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Rich | Ford |
| 1 | P1138 | Heated Oxygen Sensor (Bank 1 Sensor 2) High Voltage In Decel Fuel Cutoff | Ford |
| 1 | P1151 | Heated Oxygen Sensor (Bank 2 Sensor 1) Indicates A/F Ratio Too Lean | Ford |
| 1 | P1152 | Air Fuel Sensor (Bank 1 Sensor 1) Range/Performance (Low) | Ford |
| 1 | P1158 | Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Voltage | Ford |
| 1 | P1176 | Electronic Throttle System Motor No. 1 Open or Shorted | Volkswagen |
| 1 | P1189 | Engine Oil Pressure Switch Circuit Malfunction | Buick |
| 1 | P1260 | Immobilizer System Malfunction | Ford |
| 1 | P1271 | Air Fuel Sensor (Bank 1 Sensor 1) Circuit No Activity | Chevrolet |
| 1 | P1320 | Igniter 5 Circuit Malfunction | Nissan |
| 1 | P1338 | Bank 1 cam position sensor short | Audi |
| 1 | P1345 | Camshaft To Crankshaft Position Correlation | GMC |
| 1 | P1349 | Variable Valve Timing System (Bank 1) | Toyota |
| 1 | P1383 | Variable Cam Timing Over-Retarded (Cylinder Bank 1) | Jaguar |
| 1 | P1389 | No Auto Shutdown Relay Output Voltage To PCM | Jeep |
| 1 | P1401 | EGR Temperature Sensor Circuit Malfunction | Kia |
| 1 | P1419 | Seconday mass air flow meter | BMW |
| 1 | P1450 | Unable to Bleed Up Fuel Tank Vacuum | Ford |
| 1 | P1557 | Battery Module Temperature Sensor Signal 3 Circuit Low Voltage | Audi |
| 1 | P1568 | Battery Cell Temperature Signal Circuit Problem | Audi |
| 1 | P1599 | A/C Pressure Sensor Circuit Low Voltage | Saturn |
| 1 | P1600 | TCM Internal Watchdog Operation | Honda |
| 1 | P1602 | Powertrain Control Module Not Programmed | Audi |
| 1 | P1626 | Theft Deterrent Fuel Enable Signal Lost | Buick |
| 1 | P1629 | Theft Deterrent Signal Not Present, Engine Cranking | Pontiac |
| 1 | P1631 | Theft Deterrent Fuel Enable Signal Not Correct | Chevrolet |
| 1 | P1633 | Ignition Supplement Power '0' Switch Circuit Malfunction | Volkswagen |
| 1 | P1639 | 5-Volt Reference 'B' Circuit Malfunction | Volkswagen |
| 1 | P1646 | Hydraulic Cooling Fan Control Circuit Low | Jaguar |
| 1 | P1653 | EGR Vent Solenoid Control Circuit Malfunction | Audi |
| 1 | P1693 | Transponder No Response Error / Invalid Response | Dodge |
| 1 | P1753 | Lockup Solenoid Valve 'A' Circuit Malfunction | Audi |
| 1 | P1850 | Brake Band Apply Solenoid Circuit Malfunction | Volkswagen |
| 1 | P2004 | Intake Manifold Runner Control Stuck Open | Audi |
| 1 | P2006 | Intake Manifold Runner Control Stuck Closed | Mazda |
| 1 | P200F | o2 sensor 1 triple 1 electrical fault | Mercedes-Benz |
| 1 | P2027 | BARO Sensor Circuit Range/Performance | Mercedes-Benz |
| 1 | P202B | control circuit for redundant tank heater | Mercedes-Benz |
| 1 | P202C | Communication Error | Mercedes-Benz |
| 1 | P2070 | Intake Manifold Tuning Valve Stuck Open | Audi |
| 1 | P2092 | Intake Camshaft Position Actuator Solenoid Control Circuit Low (Bank 2) | Mercedes-Benz |
| 1 | P2096 | Downstream Fuel System Lean - HO2S-12 (Bank 1 Sensor 2) | Pontiac |
| 1 | P2104 | ETC System Malfunction - Forced Idle | Lincoln |
| 1 | P2106 | Electronic Throttle Control System - Forced Limited Power | Suzuki |
| 1 | P2108 | Electronic Throttle Control Module Performance | Cadillac |
| 1 | P2122 | Accelerator Pedal Position Sensor 1 Circuit Low Voltage | Nissan |
| 1 | P2135 | Throttle Position Sensor 1-2 Correlation Error | Saab |
| 1 | P2138 | Accelerator Pedal Position Sensor 1-2 Correlation Error | Nissan |
| 1 | P2187 | Fuel Trim System Lean At Idle (Bank 1) | Mazda |
| 1 | P2196 | Heated Oxygen Sensor (Bank 1 Sensor 1) Stuck Rich | Ford |
| 1 | P2198 | Air Fuel Ratio Sensor (Bank 2 Sensor 1) Signal Stuck "Rich" | Ford |
| 1 | P2279 | Intake Air System Leak | Volkswagen |
| 1 | P2291 | Injector Control Pressure Too Low - Engine Cranking | Ford |
| 1 | P2296 | Fuel Pressure Solenoid 2 Control Circuit High | Audi |
| 1 | P2413 | EGR System Malfunction | Honda |
| 1 | P2617 | Crankshaft Position Signal Output Circuit Malfunction | Ford |
| 1 | P3016 | Battery Block 6 Becomes Weak | Audi |
| 1 | U0100 | Lost Communication With ECM/PCM | Toyota |
| 1 | U0111 | IMA-CAN Malfunction (BCM Module - MCM) | Toyota |
| 1 | U0121 | Lost Communication With Antilock Brake System Module | Honda |
| 1 | U0140 | Lost Communication With BCM | Chevrolet |
| 1 | U0293 | Lost Communication With HV/ECU | Toyota |
| 1 | U1016 | Serial Communications Malfunction | Pontiac |
| 1 | U1040 | Lost Communication With Antilock Brake System Module | Pontiac |
| 1 | U1262 | Data Circuit Malfunction | Lincoln |
