Diagnostic Trouble Code Index for December 2021
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 |
| 5 | P0300 | Multiple Cylinder Misfire Detected | Honda, Jeep, Pontiac, Saab |
| 3 | P0302 | Cylinder 2 Misfire Detected | Honda, Pontiac, Subaru |
| 3 | P0304 | Cylinder 4 Misfire Detected | Pontiac, Subaru |
| 3 | P0340 | Camshaft Position Sensor Circuit Malfunction | Lexus, Mercedes-Benz, Mini |
| 2 | P0171 | Fuel System Lean (Bank 1) | Jaguar, Pontiac |
| 2 | P0303 | Cylinder 3 Misfire Detected | Pontiac, Subaru |
| 2 | P0401 | Insufficient EGR Flow Detected | Ford, Suzuki |
| 1 | P0016 | Crankshaft/Camshaft Timing Misalignment | Jeep |
| 1 | P0017 | Crankshaft Position - Exhaust Camshaft Position Correlation | Jeep |
| 1 | P0019 | Crankshaft Position - Exhaust Camshaft Position Correlation (Bank 2) | Jeep |
| 1 | P0036 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Control Circuit Malfunction | Mini |
| 1 | P0068 | Throttle Body Airflow Performance | Pontiac |
| 1 | P0087 | Fuel Rail Pressure Too Low | Ford |
| 1 | P0101 | MAF Sensor Performance | Pontiac |
| 1 | P0106 | MAP Sensor Performance | Pontiac |
| 1 | P0116 | ECT Sensor Performance | Pontiac |
| 1 | P0130 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Malfunction | Mini |
| 1 | P0138 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage | Honda |
| 1 | P0139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response | Honda |
| 1 | P0174 | Fuel System Lean (Bank 2) | Jaguar |
| 1 | P0193 | Fuel Rail Pressure Sensor Circuit High Voltage | Mini |
| 1 | P0301 | Cylinder 1 Misfire Detected | Pontiac |
| 1 | P0335 | Crankshaft Position Sensor Circuit Malfunction | Lexus |
| 1 | P0405 | EGR Position Sensor Circuit Low Voltage | Mercedes-Benz |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Honda |
| 1 | P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage | Mercedes-Benz |
| 1 | P0507 | Idle Speed High | Pontiac |
| 1 | P0522 | Engine Oil Pressure Sensor Circuit Low Voltage | Jeep |
| 1 | P0615 | Starter Relay Control Circuit Malfunction | Chevrolet |
| 1 | P061F | Electronic Throttle Control System Malfunction | Volvo |
| 1 | P0622 | Generator F-Terminal Circuit Malfunction | Dodge |
| 1 | P0633 | SKIM Key Not Programmed In PCM | Chevrolet |
| 1 | P0685 | Engine Controls Ignition Relay Control Circuit Malfunction | Honda |
| 1 | P0890 | Switched Battery | Volvo |
| 1 | P1233 | Fuel System Disabled Or Offline | Ford |
| 1 | P1237 | Fuel Pump Secondary Circuit Malfunction | Ford |
| 1 | P1372 | PCM Segment Time Acquisition Incorrect | Porsche |
| 1 | P1631 | Theft Deterrent Fuel Enable Signal Not Correct | Chevrolet |
| 1 | P1689 | Traction Control Delivered Torque Output Circuit Malfunction | Mini |
| 1 | P203B | Fault of function monitor in electronic accelerator | Mercedes-Benz |
| 1 | P207B | Mercedes-Benz | |
| 1 | P2187 | Fuel Trim System Lean At Idle (Bank 1) | Land Rover |
| 1 | P2189 | Fuel Trim System Lean At Idle (Bank 2) | Land Rover |
| 1 | P2263 | Turbo/Super Charger System Performance | Nissan |
| 1 | P241D | service def system see dealer | Jeep |
| 1 | P2422 | EVAP Canister Vent Shut Valve Close Malfunction | Mercedes-Benz |
| 1 | P244B | Diesel Particulate Filter Differential Pressure Too High | BMW |
| 1 | P2463 | Diesel Particulate Filter Soot Level Accumulation | Mercedes-Benz |
| 1 | P2600 | Coolant Pump Control Circuit / Open | Mercedes-Benz |
| 1 | P3014 | Battery Block 4 Becomes Weak | Honda |
