Diagnostic Trouble Code Index for October 2024
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 |
| 4 | P0300 | Multiple Cylinder Misfire Detected | Chevrolet, Honda, Nissan |
| 3 | P0301 | Cylinder 1 Misfire Detected | Honda, Nissan |
| 2 | P0171 | Fuel System Lean (Bank 1) | Chevrolet, Ford |
| 2 | P0172 | Fuel System Rich (Bank 1) | Dodge, GMC |
| 2 | P0174 | Fuel System Lean (Bank 2) | Chevrolet, Ford |
| 2 | P0303 | Cylinder 3 Misfire Detected | Honda, Volkswagen |
| 2 | P0304 | Cylinder 4 Misfire Detected | Honda |
| 1 | C121A | steering wheel pos sen not initiaized | Chrysler |
| 1 | C1614 | HCU message timeout error | Hyundai |
| 1 | P0087 | Fuel Rail Pressure Too Low | Ford |
| 1 | P0090 | Fuel Pressure Regulator 1 Control Circuit Malfunction | Chevrolet |
| 1 | P0136 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Malfunction | Audi |
| 1 | P0175 | Fuel System Rich (Bank 2) | GMC |
| 1 | P0204 | Fuel Injector 4 Control Circuit Malfunction | Mazda |
| 1 | P026D | Injection Quantity Too High | Chevrolet |
| 1 | P0302 | Cylinder 2 Misfire Detected | Honda |
| 1 | P0305 | Cylinder 5 Misfire Detected | Honda |
| 1 | P0321 | Crankshaft Position Sensor Circuit Range/Performance | Volkswagen |
| 1 | P0342 | CMP Sensor Circuit Low Voltage | Audi |
| 1 | P0351 | Ignition Coil 1 Control Circuit Malfunction | Ford |
| 1 | P0352 | Ignition Coil 2 Control Circuit Malfunction | Ford |
| 1 | P0353 | Ignition Coil 3 Control Circuit Malfunction | Ford |
| 1 | P0354 | Ignition Coil 4 Control Circuit Malfunction | Ford |
| 1 | P0355 | Ignition Coil 5 Control Circuit Malfunction | Ford |
| 1 | P0356 | Ignition Coil 6 Control Circuit Malfunction | Ford |
| 1 | P1170 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit - No Inversion | Toyota |
| 1 | P117B | Fuel performance/direct injector | Toyota |
| 1 | P1326 | ION Sensing Module Combustion Quality | Hyundai |
| 1 | P163A | control module fuel pressure regulator 1 control | Chevrolet |
| 1 | P1710 | Turbine Revolution Sensor Circuit Malfunction | Toyota |
| 1 | P2002 | Diesel Particulate Filter Efficiency | Ram |
| 1 | P2138 | Accelerator Pedal Position Sensor 1-2 Correlation Error | Infiniti |
| 1 | P2188 | Fuel Trim System Rich At Idle (Bank 1) | Land Rover |
| 1 | P2190 | Fuel Trim System Rich At Idle (Bank 2) | Land Rover |
| 1 | P2237 | Air Fuel Sensor 1 (Bank 1 Sensor 1) Pumping Current Signal Open | Audi |
| 1 | P2240 | Air Fuel Ratio Sensor (Bank 2 Sensor 1) Pumping Current Signal Open | Audi |
| 1 | P244A | Diesel Particulate Filter Differential Pressure Too Low | Ram |
| 1 | P2747 | Rocker Arm Oil Pressure Switch Circuit High Voltage | Honda |
| 1 | P3441 | Cylinder 6 Deactivation Solenoid Control Circuit Malfunction | Chevrolet |
| 1 | P3443 | cylinder 6 deactivation slenoid valve control circuit. | Chevrolet |
| 1 | P4417 | EVAP system purge flow incorrect actuator stuck | Toyota |
| 1 | P4550 | EVAP system leakage detected large leak | Toyota |
| 1 | P5050 | Idle control system | Toyota |
| 1 | U0001 | CAN 'C' Bus | Chrysler |
| 1 | U0002 | CAN 'C' Bus Off Performance | Chrysler |
| 1 | U0100 | Lost Communication With ECM/PCM | Chrysler |
| 1 | U0141 | Lost Communication With Front Control Module | Chrysler |
| 1 | U0212 | lost communication | Chrysler |
| 1 | U0293 | Lost Communication With HV/ECU | Hyundai |
| 1 | U1004 | CAN 'C' Bus Transmit Performance | Hyundai |
| 1 | U4016 | Invalid data from ecm/pcm a not current hvac | Honda |
| 1 | U4166 | VSA system malfunction | Honda |
