Diagnostic Trouble Code Search

Find detailed information about vehicle diagnostic trouble codes (DTCs). Enter a code or select a make to search our comprehensive database.

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DTC Code Format Guide
P Powertrain
B Body
C Chassis
U Network

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P Codes

Code Type System System Name Module Message
P1438 P-Code Powertrain A/C Evaporator Air Temperature Circuit Range/Performance Engine Control Module A/C Evaporator Air Temperature Circuit Range/Performance
P1439 P-Code Powertrain Floor Temperature Switch Circuit Malfunction Engine Control Module Floor Temperature Switch Circuit Malfunction
P1440 P-Code Powertrain Purge Valve Stuck Open Engine Control Module Purge Valve Stuck Open
P1441 P-Code Powertrain Evaporative Emission (EVAP) System Flow During Non-Purge Chevrolet Only Engine Control Module Evaporative Emission (EVAP) System Flow During Non-Purge Chevrolet Only
P1441 P-Code Powertrain Evaporative Emission (EVAP) System Flow During Non-Purge Oldsmobile Only Engine Control Module Evaporative Emission (EVAP) System Flow During Non-Purge Oldsmobile Only
P1442 P-Code Powertrain Evaporative Emission Control System Leak Detected Engine Control Module Evaporative Emission Control System Leak Detected
P1443 P-Code Powertrain Evaporative Emission Control System Control Valve Engine Control Module Evaporative Emission Control System Control Valve
P1444 P-Code Powertrain Purge Flow Sensor Circuit Low Input Engine Control Module Purge Flow Sensor Circuit Low Input
P1445 P-Code Powertrain Purge Flow Sensor Circuit High Input Engine Control Module Purge Flow Sensor Circuit High Input
P1446 P-Code Powertrain Evaporative Vac Solenoid Circuit Malfunction Engine Control Module Evaporative Vac Solenoid Circuit Malfunction
P1447 P-Code Powertrain ELC System Closure Valve Flow Fault Engine Control Module ELC System Closure Valve Flow Fault
P1448 P-Code Powertrain ELC System 2 Fault Engine Control Module ELC System 2 Fault
P1449 P-Code Powertrain Evaporative Check Solenoid Circuit Malfunction Engine Control Module Evaporative Check Solenoid Circuit Malfunction
P1450 P-Code Powertrain Unable To Bleed Up Fuel Tank Vacuum Engine Control Module Unable To Bleed Up Fuel Tank Vacuum
P1451 P-Code Powertrain Evap Emission Control Sys Vent Control Valve Circuit Engine Control Module Evap Emission Control Sys Vent Control Valve Circuit
P1452 P-Code Powertrain Unable To Bleed – Up Vacuum in Tank Engine Control Module Unable To Bleed – Up Vacuum in Tank
P1453 P-Code Powertrain Fuel Tank Pressure Relief Valve Malfunction Engine Control Module Fuel Tank Pressure Relief Valve Malfunction
P1454 P-Code Powertrain Evaporative System Vacuum Test Malfunction Engine Control Module Evaporative System Vacuum Test Malfunction
P1455 P-Code Powertrain Evap Emission Control Sys Leak Detected (Gross Leak/No Flow) Engine Control Module Evap Emission Control Sys Leak Detected (Gross Leak/No Flow)
P1456 P-Code Powertrain Fuel Tank Temperature Sensor Circuit Malfunction Engine Control Module Fuel Tank Temperature Sensor Circuit Malfunction