Diagnostic Trouble Code Index for July 2020
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 |
| 13 | P0300 | Multiple Cylinder Misfire Detected | Audi, Chevrolet, Ford, GMC, Honda, Jeep, Nissan, Pontiac, Porsche |
| 4 | P0303 | Cylinder 3 Misfire Detected | Ford, GMC, Jeep, Volvo |
| 3 | P0089 | Fuel Pressure Regulator Performance | Chevrolet |
| 3 | P0301 | Cylinder 1 Misfire Detected | Acura, Jeep, Volvo |
| 3 | P0302 | Cylinder 2 Misfire Detected | Chevrolet, Jeep, Volvo |
| 2 | P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction | Chevrolet, Ford |
| 2 | P0171 | Fuel System Lean (Bank 1) | Ford, GMC |
| 2 | P0304 | Cylinder 4 Misfire Detected | Audi, Jeep |
| 2 | P0305 | Cylinder 5 Misfire Detected | Jeep, Volvo |
| 2 | P0430 | Catalyst System Low Efficiency (Bank 2) | Dodge, Honda |
| 2 | P0456 | EVAP System Very Small Leak Detected | Scion, Toyota |
| 2 | P2271 | Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Rich | Audi, Ford |
| 2 | U0073 | Control Module Communication Bus Off | Chevrolet, Pontiac |
| 2 | U0101 | Lost Communication With TCM | Dodge, Honda |
| 2 | U0155 | No Cluster Bus Message | Dodge, Honda |
| 1 | B2799 | Engine Immobilizer System Malfunction | Toyota |
| 1 | C0F17 | No message from JBBF Vehicle mode receiver DKG/EGS transmitter DSC/DME | BMW |
| 1 | P0011 | Intake Camshaft Position System Performance | Chevrolet |
| 1 | P0092 | Fuel Pressure Regulator 1 Control Circuit High Voltage | GMC |
| 1 | P0102 | MAF Sensor Circuit Low Frequency | GMC |
| 1 | P0141 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction | Chevrolet |
| 1 | P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | Chevrolet |
| 1 | P0161 | Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction | Chevrolet |
| 1 | P0172 | Fuel System Rich (Bank 1) | Ford |
| 1 | P0174 | Fuel System Lean (Bank 2) | GMC |
| 1 | P0230 | Fuel Pump Relay Control Circuit Malfunction | Chevrolet |
| 1 | P0299 | Turbocharger Engine Underboost | Ford |
| 1 | P0308 | Cylinder 8 Misfire Detected | Ford |
| 1 | P0315 | Crankshaft Position Sensor Variation Not Learned | Ford |
| 1 | P0316 | Misfire Occurred In First 1,000 Revolutions | Ford |
| 1 | P0329 | Knock Sensor Circuit Intermittent (Bank 1) | GMC |
| 1 | P0335 | Crankshaft Position Sensor Circuit Malfunction | GMC |
| 1 | P0339 | Crankshaft Position Sensor Signal Intermittent | Honda |
| 1 | P0340 | Camshaft Position Sensor Circuit Malfunction | Ford |
| 1 | P0344 | Camshaft Position Sensor Signal Intermittent | Ford |
| 1 | P0345 | Camshaft Position Sensor 'A' Circuit Malfunction (Bank 2) | Ford |
| 1 | P0349 | Camshaft Position Sensor Circuit Intermittent (Bank 2) | Ford |
| 1 | P0405 | EGR Position Sensor Circuit Low Voltage | Ford |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Chevrolet |
| 1 | P0440 | General EVAP System Failure | Toyota |
| 1 | P0455 | EVAP System Large Leak Detected | Ford |
| 1 | P0472 | Exhaust Backpressure Sensor Circuit Low Input | Ford |
| 1 | P0478 | Exhaust Backpressure Control Valve Excessive | Ford |
| 1 | P0528 | Fan Speed Sensor Circuit - No Signal | Ford |
| 1 | P052E | Positive Crankcase Ventilation Regulator Valve Performance | Audi |
| 1 | P0606 | Control Module Internal Performance | Chevrolet |
| 1 | P0641 | 5-Volt Reference 1 Circuit Malfunction | Chevrolet |
| 1 | P0700 | Automatic Transmission System Malfunction Detected | Dodge |
| 1 | P0899 | Fuel Pressure Regulator Valve 1 is faulty | Mercedes-Benz |
| 1 | P1221 | TP Sensor 2 Signal Correlation | Chevrolet |
| 1 | P1294 | Target Idle Speed Not Reached | GMC |
| 1 | P1324 | Knock Sensor Power Source Circuit Low Input | Porsche |
| 1 | P1624 | Immobilizer Communication Error | Mazda |
| 1 | P1628 | Sensor Reference Voltage 2 Circuit Erratic | Chevrolet |
| 1 | P1712 | Pressure Control Solenoid 'E' Circuit High Voltage (Allison 1000) | Mercedes-Benz |
| 1 | P2172 | High Airflow / Vacuum Leak Detected (Instantaneous Accumulation) | Dodge |
| 1 | P2178 | Fuel Trim System Rich At Cruise or Acceleration (Bank 1) | Audi |
| 1 | P2181 | Cooling System Performance | Jeep |
| 1 | P2188 | Fuel Trim System Rich At Idle (Bank 1) | Audi |
| 1 | P2196 | Heated Oxygen Sensor (Bank 1 Sensor 1) Stuck Rich | Ford |
| 1 | P219A | Bank 1 air-fuel ratio imbalance | Honda |
| 1 | P219B | fuel trim cylinder balance bank 2 | Honda |
| 1 | P2237 | Air Fuel Sensor 1 (Bank 1 Sensor 1) Pumping Current Signal Open | Audi |
| 1 | P2273 | Heated Oxygen Sensor (Bank 2 Sensor 2) Signal Biased Rich | Ford |
| 1 | P228D | Fuel Pressure Regulator 1 control performance | Chevrolet |
| 1 | P2290 | Injector Control Pressure Too Low | Ford |
| 1 | P2440 | Secondary Air Injection System Control/Shut-Off Valve Stuck Open | Chevrolet |
| 1 | P2635 | Fuel Pump Flow Performance | GMC |
| 1 | P3010 | Battery Total Resistance Malfunction | Porsche |
| 1 | P3441 | Cylinder 6 Deactivation Solenoid Control Circuit Malfunction | Dodge |
| 1 | P3497 | MDS Rationality - Bank 2 | Dodge |
| 1 | U0074 | control module communication powertrain expansion can bus off | GMC |
| 1 | U0100 | Lost Communication With ECM/PCM | Honda |
| 1 | U0122 | Lost Communication With VSA Modulator Control Unit | Dodge |
| 1 | U0164 | Lost Communication With HVAC Control Module | Chevrolet |
| 1 | U0401 | Implausible Data Received From ECM / PCM | Jeep |
| 1 | U0402 | Implausible Data Received From TCM | Honda |
| 1 | U0420 | Invalid data received from power steering control module | Honda |
| 1 | U0423 | Implausible Data Received From Cluster / CCN | Dodge |
| 1 | U2105 | TCM - No Communication With Engine Control Module | Pontiac |
| 1 | U2106 | ECM - No Communication With Transmission Control Module | Pontiac |
