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Engine Control Module (ECM) Diagnostic Trouble Codes - 7 Of 11 Expand All (for easy ctrl-f) Collapse All ECM-405C, Fuel Level Sensor (B5254T2; 2004) ECM-405C, Fuel Level Sensor (B6294S2; B6294T; 2002-2004) ECM-406C: Fuel Tank System, Leakage. Fuel Tank Filler Cap Missing (B5254T2; 2004) ECM-406C: Fuel Tank System, Leakage. Fuel Tank Filler Cap Missing (B6294S2; B6294T; 2003-2004) ECM-420C: Evaporative Emission System (EVAP) Valve. Open (B5254T2; B6294S2; B6294T; 2005-2006) ECM-420D: Evaporative Emission System (EVAP). Closed (B5254T2; B6294S2; B6294T; 2005-2006) ECM-421B: Canister Purge (Cp) Valve. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-421C: Evaporative Emission System (EVAP) Valve. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-421D: Evaporative Emission System (EVAP) Valve. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-4308: Leak Diagnostic. Large Leak (B6284T; B6294S; 2000-2001) ECM-4308: Leak Diagnostic. Major Leak. Permanent Fault (B6284T; B6304S3; 1999) ECM-430C: Fuel Tank System, Leakage. Fuel Tank Filler Cap Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-430C: Leak Diagnostic. Smallest Leak (B6284T; B6294S; 2000-2001) ECM-430D: Leak Diagnostic. Minor Leak. Intermittent Fault (B6284T; B6304S3; 1999) ECM-430D: Leak Diagnostic. Minor Leak. Permanent Fault (B6284T; B6304S3; 1999) ECM-430D: Leak Diagnostic. Small Leak (B6284T; B6294S; 2000-2001) ECM-431B: Leak Diagnostic Unit, Preheating. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-431C: Leak Diagnostic Unit, Preheating. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-431D: Leak Diagnostic Unit, Preheating. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-431D: Leak Diagnostic Unit. Faulty Signal (B5254T2; 2004) ECM-431D: Leak Diagnostic Unit. Faulty Signal (B6294S2; B6294T; 2003-2004) ECM-431D: Leak Diagnostic Unit. Faulty Signal (B6294S2; B6294T; 2002) ECM-431D: Leak Diagnostic Unit. Signal Missing (B5254T2; 2004) ECM-431D: Leak Diagnostic Unit. Signal Missing (B6294S2; B6294T; 2002) ECM-431D: Leak Diagnostic Unit. Signal Missing (B6294S2; B6294T; 2003-2004) ECM-431D: Leak Diagnostic Unit. Signal Too High (B5254T2; 2004) ECM-431D: Leak Diagnostic Unit. Signal Too High (B6294S2; B6294T; 2002) ECM-431D: Leak Diagnostic Unit. Signal Too High (B6294S2; B6294T; 2003-2004) ECM-431D: Leak Diagnostic Unit. Signal Too Low (B5254T2; 2004) ECM-431D: Leak Diagnostic Unit. Signal Too Low (B6294S2; B6294T; 2002) ECM-431D: Leak Diagnostic Unit. Signal Too Low (B6294S2; B6294T; 2003-2004) ECM-432B: Leak Diagnostic Unit, Valve. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-432C: Leak Diagnostic Unit, Preheating. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-432D: Leak Diagnostic Unit, Preheating. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-4338: Fuel Tank Filler Cap Missing (B5254T2; 2004) ECM-4338: Fuel Tank Filler Cap Missing (B6284T; 1999-2001) ECM-4338: Fuel Tank Filler Cap Missing (B6294S; 2000-2001) ECM-4338: Fuel Tank Filler Cap Missing (B6294S2; B6294T; 2002-2004) ECM-4338: Fuel Tank Filler Cap Missing (B6304S3; 1999) ECM-433B: Leak Diagnostic Unit, Pump. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-433C: Leak Diagnostic Unit, Pump. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-433D: Leak Diagnostic Unit, Pump. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-434C: Fuel Tank System, Leakage. Minor Leak (B5254T2; B6294S2; B6294T; 2005-2006) ECM-4360: Leak Diagnostic Unit. Faulty Signal (B5254T2; 2005-2006) ECM-4360: Leak Diagnostic Unit. Faulty Signal (B6294S2; B6294T; 2005-2006) ECM-436B: Leak Diagnostic Unit. Signal Missing (B5254T2; 2005-2006) ECM-436B: Leak Diagnostic Unit. Signal Missing (B6294S2; B6294T; 2005-2006) ECM-436C: Leak Diagnostic Unit. Signal Too High (B5254T2; 2005-2006) ECM-436C: Leak Diagnostic Unit. Signal Too High (B6294S2; B6294T; 2005-2006) ECM-436D: Leak Diagnostic Unit. Signal Too Low (B5254T2; 2005-2006) ECM-436D: Leak Diagnostic Unit. Signal Too Low (B6294S2; B6294T; 2005-2006) ECM-4380: Fuel Tank Filler Cap. Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-439C: Fuel Tank System, Leakage. Major Leak (B5254T2; B6294S2; B6294T; 2005-2006) ECM-4400: Fuel Level Sensor. Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006) ECM-440B: Fuel Level Sensor. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-440C: Fuel Level Sensor. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-440D: Fuel Level Sensor. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-4420: Fuel Level Sensor. Faulty Signal (B5254T2; 2006) ECM-443B: Fuel Level Sensor. Signal Too Low (B5254T2; 2006) ECM-443C: Fuel Level Sensor. Signal Too High (B5254T2; 2006) ECM-443D: Fuel Level Sensor. Signal Missing (B5254T2; 2006) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Intermittent Fault (B6284T; 1999-2001) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Intermittent Fault (B6294S; 2000-2001) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Intermittent Fault (B6294S2; B6294T; 2002-2004) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Intermittent Fault (B6304S3; 1999) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Permanent Fault (B6284T; 1999-2001) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Permanent Fault (B6294S; 2000-2001) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Permanent Fault (B6294S2; B6294T; 2002-2004) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Permanent Fault (B6304S3; 1999) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency. Intermittent Fault (B5254T2; 2004) ECM-4801: Three-Way Catalytic Converter (TWC) Efficiency. Permanent Fault (B5254T2; 2004) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Intermittent Fault (B6284T; 1999-2001) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Intermittent Fault (B6294S; 2000-2001) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Intermittent Fault (B6294S2; B6294T; 2002-2004) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Intermittent Fault (B6304S3; 1999) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Permanent Fault (B6284T; 1999-2001) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Permanent Fault (B6294S; 2000-2001) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Permanent Fault (B6294S2; B6294T; 2002-2004) ECM-4901: Three-Way Catalytic Converter (TWC) Efficiency, Bank 2. Permanent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Intermittent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Intermittent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Intermittent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Intermittent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Intermittent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Permanent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Permanent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Permanent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Permanent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Missing. Permanent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Intermittent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Intermittent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Intermittent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Intermittent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Intermittent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Permanent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Permanent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Permanent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Permanent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too High. Permanent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Intermittent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Intermittent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Intermittent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Intermittent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Intermittent Fault (B6304S3; 1999) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Permanent Fault (B5254T2; 2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Permanent Fault (B6284T; 1999-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Permanent Fault (B6294S; 2000-2001) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Permanent Fault (B6294S2; B6294T; 2002-2004) ECM-5000: Air Conditioning (A/C) Pressure Sensor. Signal Too Low. Permanent Fault (B6304S3; 1999) ECM-5000: Engine Speed (Rpm) Sensor Signal. Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006) ECM-500B: Engine Speed (Rpm) Sensor Signal. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-500C: Engine Speed (Rpm) Sensor Signal. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006) ECM-500D: Engine Speed (Rpm) Sensor Signal. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) ECM-5100: Malfunction Indicator Lamp (Mil), TCM. Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006) ECM-510F: Vehicle Speed Signal (B5254T2; 2004) ECM-510F: Vehicle Speed Signal (B6284T; 1999-2001) ECM-510F: Vehicle Speed Signal (B6294S; 2000-2001) ECM-510F: Vehicle Speed Signal (B6294S2; B6294T; 2002-2004) ECM-510F: Vehicle Speed Signal (B6304S3; 1999) ECM-5110: Malfunction Indicator Lamp (Mil), CEM. Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006) ECM-512B: Malfunction Indicator Lamp (Mil) Communication. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006) ECM-5130: Malfunction Indicator Lamp (Mil) Control Module Transmission (TCM). Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006) ECM-513B: Malfunction Indicator Lamp (Mil), Transmission Control Module (TCM). Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006)