Diagnostic Trouble Code Index for July 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 |
| 1 | P0088 | Fuel Rail Pressure Too High | Audi |
| 1 | P0132 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit High Voltage | Chevrolet |
| 1 | P0134 | Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity | Chevrolet |
| 1 | P0138 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage | Chevrolet |
| 1 | P0152 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit High Voltage | Chevrolet |
| 1 | P0154 | Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Activity | Chevrolet |
| 1 | P0171 | Fuel System Lean (Bank 1) | Jeep |
| 1 | P0202 | Fuel Injector 2 Control Circuit Malfunction | Jeep |
| 1 | P025A | Fuel Pump Flow Control Module Enable Circuit Malfunction | GMC |
| 1 | P0299 | Turbocharger Engine Underboost | Honda |
| 1 | P0300 | Multiple Cylinder Misfire Detected | Honda |
| 1 | P0302 | Cylinder 2 Misfire Detected | Jeep |
| 1 | P0336 | Crankshaft Position Sensor Performance | Chevrolet |
| 1 | P0454 | Fuel Tank Pressure Sensor Circuit Intermittent | Ford |
| 1 | P069E | Fuel Pump Control Module (FPCM) Requested MIL Illumination | GMC |
| 1 | P1340 | Camshaft Position Sensor 'A' Circuit Malfunction (Bank 2) | Land Rover |
| 1 | P200A | Intake manifold runner performance | Hyundai |
| 1 | P224E | Alternative fuel tank shut off valve A circuit low has been detected | Ford |
| 1 | P249D | Closed Loop Reductant Injection Control At Limit - Flow Too Low | Land Rover |
| 1 | U210B | Lost communications fuel pump control module to RCM. | Ford |
