Diagnostic Trouble Code Index for September 2025
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 |
| 3 | P0300 | Multiple Cylinder Misfire Detected | GMC, Jeep, Kia |
| 2 | P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | Dodge, Toyota |
| 2 | P0340 | Camshaft Position Sensor Circuit Malfunction | Jeep |
| 1 | P0011 | Intake Camshaft Position System Performance | Chevrolet |
| 1 | P0013 | Exhaust Camshaft Position Actuator Solenoid Control Circuit (Bank 1) | Jeep |
| 1 | P0014 | Exhaust Camshaft Position System Performance | Chevrolet |
| 1 | P0018 | Crankshaft Position - Intake Camshaft Position Correlation (Bank 2) | Jeep |
| 1 | P0020 | Camshaft Position 'A' Actuator Circuit Malfunction (Bank 2) | Jeep |
| 1 | P0023 | Exhaust Camshaft Position Actuator Solenoid Control Circuit (Bank 2) | Jeep |
| 1 | P0068 | Throttle Body Airflow Performance | Chevrolet |
| 1 | P0087 | Fuel Rail Pressure Too Low | Audi |
| 1 | P0125 | Engine Coolant Temperature Insufficient For Closed Loop Fuel Control | Toyota |
| 1 | P0134 | Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity | GMC |
| 1 | P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction | Toyota |
| 1 | P0171 | Fuel System Lean (Bank 1) | Lexus |
| 1 | P0172 | Fuel System Rich (Bank 1) | GMC |
| 1 | P0218 | Transmission Fluid Over-Temperature | Dodge |
| 1 | P0237 | Turbocharger Boost Sensor Circuit Low Voltage | Chevrolet |
| 1 | P0302 | Cylinder 2 Misfire Detected | Kia |
| 1 | P0303 | Cylinder 3 Misfire Detected | Kia |
| 1 | P0325 | Knock Sensor Circuit Malfunction | Lexus |
| 1 | P0327 | Knock Sensor Circuit Low Voltage (Bank 1) | Pontiac |
| 1 | P0330 | Knock Sensor 2 Circuit Malfunction | Lexus |
| 1 | P0365 | Exhaust Camshaft Position Sensor Circuit Malfunction | Jeep |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | GMC |
| 1 | P0448 | EVAP Canister Vent Control Valve Closed | Nissan |
| 1 | P0449 | EVAP Vent Solenoid Control Circuit Malfunction | Chevrolet |
| 1 | P0452 | Fuel Tank Pressure Sensor Circuit Low Voltage | Jeep |
| 1 | P0455 | EVAP System Large Leak Detected | GMC |
| 1 | P0652 | Sensor Reference Voltage 2 Circuit Low | Jeep |
| 1 | P0730 | Incorrect Gear Ratio | Jeep |
| 1 | P0777 | Pressure Control Solenoid Valve 'B' Stuck On | Jeep |
| 1 | P1009 | Variable Valve Timing Control Advance Malfunction | Honda |
| 1 | P1010 | OCV For VVTL Circuit Malfunction | Volkswagen |
| 1 | P1101 | Intake Airflow System Performance | Chevrolet |
| 1 | P1110 | Atmospheric Pressure Sensor Low Voltage | Volkswagen |
| 1 | P1568 | Battery Cell Temperature Signal Circuit Problem | Nissan |
| 1 | P1628 | Sensor Reference Voltage 2 Circuit Erratic | Jeep |
| 1 | P2019 | Intake Manifold Runner Position Sensor/Switch Circuit Malfunction (Bank 2) | Audi |
| 1 | P2127 | Accelerator Pedal Position Sensor 2 Circuit Low Voltage | Jeep |
| 1 | P2444 | Secondary Air Injection System Control/Shut-Off Valve Stuck On | Pontiac |
| 1 | U0100 | Lost Communication With ECM/PCM | Chrysler |
| 1 | U0101 | Lost Communication With TCM | Chrysler |
| 1 | U0121 | Lost Communication With Antilock Brake System Module | Chrysler |
| 1 | U0212 | lost communication | Chrysler |
| 1 | U0402 | Implausible Data Received From TCM | Chrysler |
| 1 | U042F | Can signal error | Nissan |
| 1 | U1000 | Class 2 Communication Malfunction | Nissan |
| 1 | U1001 | Lost Communication With XXX Control Module | Nissan |
