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Engine Control Module (ECM) Diagnostic Trouble Codes (DTC) - 7 Of 14 Expand All (for easy ctrl-f) Collapse All ECM-4024: Leak Diagnostic Unit, Pump, Signal Missing (B5234T3; 2002-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Missing (B5244T3; 2002-2003) ECM-4024: Leak Diagnostic Unit, Pump, Signal Missing (B5254T2; 2003-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Missing (B5254T4; 2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too High (B5234T3; 2002-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too High (B5244T3; 2002-2003) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too High (B5254T2; 2003-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too High (B5254T4; 2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too Low (B5234T3; 2002-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too Low (B5244T3; 2002-2003) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too Low (B5254T2; 2003-2004) ECM-4024: Leak Diagnostic Unit, Pump, Signal Too Low (B5254T4; 2004) ECM-402A: Fuel Tank Pressure Sensor, Faulty Signal (B5244S; 2001-2002) ECM-4038: Fuel Tank Filler Cap Missing, Major Leak (B5244S; 2001-2002) ECM-4038: Fuel Tank Filler Cap, Faulty Signal (B5244S; 2003-2007) ECM-4038: Fuel Tank Filler Cap, Faulty Signal (B5244S6; 2003-2006) ECM-4047: Canister Purge (Cp) Valve / EVAP Canister Shut-Off Valve, Canister Purge (Cp) Valve Leakage (B5244S; 2001-2002) ECM-4047: Canister Purge (Cp) Valve / EVAP Canister Shut-Off Valve, EVAP Canister Shut-Off Valve Clogged (B5244S; 2001-2002) ECM-4047: Canister Purge (Cp) Valve / EVAP Canister Shut-Off Valve, EVAP Canister Shut-Off Valve Leakage (B5244S; 2001-2002) ECM-404C: Fuel Tank System, Leakage, Major Leak (B5234T3; B5254T2; 2003-2004) ECM-404C: Fuel Tank System, Leakage, Major Leak (B5244T3; 2003) ECM-404C: Fuel Tank System, Leakage, Major Leak (B5254T4; 2004) ECM-4050: Fuel Level Sensor, Faulty Signal (B5234T3; 2001-2004) ECM-4050: Fuel Level Sensor, Faulty Signal (B5244S; 2001-2002) ECM-4050: Fuel Level Sensor, Faulty Signal (B5244S; 2003-2007) ECM-4050: Fuel Level Sensor, Faulty Signal (B5244S6; 2003-2006) ECM-4050: Fuel Level Sensor, Faulty Signal (B5244T3; 2001-2003) ECM-4050: Fuel Level Sensor, Faulty Signal (B5254T2; 2003-2004) ECM-4050: Fuel Level Sensor, Faulty Signal (B5254T4; 2004) ECM-4050: Fuel Level Sensor, Signal Missing (B5234T3; 2001-2004) ECM-4050: Fuel Level Sensor, Signal Missing (B5244T3; 2001-2003) ECM-4050: Fuel Level Sensor, Signal Missing (B5254T2; 2003-2004) ECM-4050: Fuel Level Sensor, Signal Missing (B5254T4; 2004) ECM-4050: Fuel Level Sensor, Signal Too High (B5234T3; 2001-2004) ECM-4050: Fuel Level Sensor, Signal Too High (B5244T3; 2001-2003) ECM-4050: Fuel Level Sensor, Signal Too High (B5254T2; 2003-2004) ECM-4050: Fuel Level Sensor, Signal Too High (B5254T4; 2004) ECM-4050: Fuel Level Sensor, Signal Too Low (B5234T3; 2001-2004) ECM-4050: Fuel Level Sensor, Signal Too Low (B5244T3; 2001-2003) ECM-4050: Fuel Level Sensor, Signal Too Low (B5254T2; 2003-2004) ECM-4050: Fuel Level Sensor, Signal Too Low (B5254T4; 2004) ECM-405A: Fuel Level Sensor, Faulty Signal (B5244S; 2001-2004) ECM-405A: Fuel Level Sensor, Faulty Signal (B5244S; 2005-2007) ECM-405A: Fuel Level Sensor, Faulty Signal (B5244S6; 2003-2004) ECM-405A: Fuel Level Sensor, Faulty Signal (B5244S6; 2005-2006) ECM-405C, Fuel Level Sensor (B5234T3; 2002-2004) ECM-405C, Fuel Level Sensor (B5244T3; 2002-2003) ECM-405C, Fuel Level Sensor (B5254T2; 2003-2004) ECM-405C, Fuel Level Sensor (B5254T4; 2004) ECM-406C: Fuel Tank System, Leakage, Fuel Tank Filler Cap Missing (B5234T3; B5254T2; 2003-2004) ECM-406C: Fuel Tank System, Leakage, Fuel Tank Filler Cap Missing (B5244T3; 2003) ECM-406C: Fuel Tank System, Leakage, Fuel Tank Filler Cap Missing (B5254T4; 2004) ECM-4201: Three-Way Catalytic Converter (TWC) Efficiency, Power Deterioration (B5244S; 2001-2007) ECM-4201: Three-Way Catalytic Converter (TWC) Efficiency, Power Deterioration (B5244S6; 2003-2006) ECM-420C: Evaporative Emission System (EVAP) Valve, Open (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-420D: Evaporative Emission System (EVAP), Closed (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-421B: Canister Purge (Cp) Valve, Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-421C: Evaporative Emission System (EVAP) Valve, Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-421D: Evaporative Emission System (EVAP) Valve, Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-4308: Fuel Tank System, Leakage, Major Leak (B5244S; 2003-2007) ECM-4308: Fuel Tank System, Leakage, Major Leak (B5244S6; 2003-2006) ECM-4308: Fuel Tank System, Leakage, Minor Leak (B5244S; 2003-2007) ECM-4308: Fuel Tank System, Leakage, Minor Leak (B5244S6; 2003-2006) ECM-4308: Leak Diagnostic, Large Leak (B5234T3; B5244T3; 2001) ECM-4308: Leak Diagnostic, Rough Leak (B5244S; 2001-2002) ECM-4308: Leak Diagnostic, Small Leak (B5244S; 2001-2002) ECM-430C: Fuel Tank System, Leakage, Fuel Tank Filler Cap Missing (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-430C: Leak Diagnostic, Smallest Leak (B5234T3; B5244T3; 2001) ECM-430D: Leak Diagnostic, Small Leak (B5234T3; B5244T3; 2001) ECM-4310: Leak Diagnostic Unit, Pump, Signal Too High (B5244S; 2003-2007) ECM-4310: Leak Diagnostic Unit, Pump, Signal Too High (B5244S6; 2003-2006) ECM-4310: Leak Diagnostic Unit, Pump, Signal Too Low (B5244S; 2003-2007) ECM-4310: Leak Diagnostic Unit, Pump, Signal Too Low (B5244S6; 2003-2006) ECM-431A: Leak Diagnostic Unit, Pump, Faulty Signal (B5244S; 2003-2007) ECM-431A: Leak Diagnostic Unit, Pump, Faulty Signal (B5244S6; 2003-2006) ECM-431B: Leak Diagnostic Unit, Preheating, Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-431C: Leak Diagnostic Unit, Preheating, Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-431D: Leak Diagnostic Unit, Preheating, Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-431D: Leak Diagnostic Unit, Faulty Signal (B5234T3; 2003-2004) ECM-431D: Leak Diagnostic Unit, Faulty Signal (B5234T3; B5244T3; 2002) ECM-431D: Leak Diagnostic Unit, Faulty Signal (B5244T3; 2003) ECM-431D: Leak Diagnostic Unit, Faulty Signal (B5254T2; 2003-2004) ECM-431D: Leak Diagnostic Unit, Faulty Signal (B5254T4; 2004) ECM-431D: Leak Diagnostic Unit, Signal Missing (B5234T3; B5244T3; 2002) ECM-431D: Leak Diagnostic Unit, Signal Missing (B5234T3; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Missing (B5244T3; 2003) ECM-431D: Leak Diagnostic Unit, Signal Missing (B5254T2; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Missing (B5254T4; 2004) ECM-431D: Leak Diagnostic Unit, Signal Too High (B5234T3; B5244T3; 2002) ECM-431D: Leak Diagnostic Unit, Signal Too High (B5234T3; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Too High (B5244T3; 2003) ECM-431D: Leak Diagnostic Unit, Signal Too High (B5254T2; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Too High (B5254T4; 2004) ECM-431D: Leak Diagnostic Unit, Signal Too Low (B5234T3; B5244T3; 2002) ECM-431D: Leak Diagnostic Unit, Signal Too Low (B5234T3; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Too Low (B5244T3; 2003) ECM-431D: Leak Diagnostic Unit, Signal Too Low (B5254T2; 2003-2004) ECM-431D: Leak Diagnostic Unit, Signal Too Low (B5254T4; 2004) ECM-4320: Leak Diagnostic Unit, Valve, Signal Too High (B5244S; 2003-2007) ECM-4320: Leak Diagnostic Unit, Valve, Signal Too High (B5244S6; 2003-2006) ECM-4320: Leak Diagnostic Unit, Valve, Signal Too Low (B5244S; 2003-2007) ECM-4320: Leak Diagnostic Unit, Valve, Signal Too Low (B5244S6; 2003-2006) ECM-432A: Leak Diagnostic Unit, Valve, Faulty Signal (B5244S; 2003-2007) ECM-432A: Leak Diagnostic Unit, Valve, Faulty Signal (B5244S6; 2003-2006) ECM-432B: Leak Diagnostic Unit, Valve, Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-432C: Leak Diagnostic Unit, Preheating, Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-432D: Leak Diagnostic Unit, Preheating, Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-4338: Fuel Tank Filler Cap Missing (B5234T3; B5244T3; 2001) ECM-4338: Fuel Tank Filler Cap Missing (B5234T3; 2002-2004) ECM-4338: Fuel Tank Filler Cap Missing (B5244T3; 2002-2003) ECM-4338: Fuel Tank Filler Cap Missing (B5254T2; 2003-2004) ECM-4338: Fuel Tank Filler Cap Missing (B5254T4; 2004) ECM-433B: Leak Diagnostic Unit, Pump, Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-433C: Leak Diagnostic Unit, Pump, Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-433D: Leak Diagnostic Unit, Pump, Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-4340: Fuel Tank Filler Cover, Lock, Signal Missing (B5244S; B5244S6; 2003-2004) ECM-434C: Fuel Tank System, Leakage, Minor Leak (B5244T5; B5254T2; B5254T4; 2005-2007) ECM-4360: Leak Diagnostic Unit, Faulty Signal (B5244T5; B5254T2; B5254T4; 2005-2007)