Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Volvo V50 T-5 R-DesignFACTORY OEM SERVICE PROCEDURE
Engine Control Module (ECM) Diagnostic Trouble Codes - 5 Of 9
- ECM-301A: Camshaft Position (CMP) Sensor, Exhaust. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-303C: Front Knock Sensor (KS). Signal Too High (B5254T3; 2005)
- ECM-303C: Front Knock Sensor (KS). Signal Too High (B5254T3; 2006-2007)
- ECM-303C: Front Knock Sensor (KS). Signal Too High (B5254T7; 2008-2011)
- ECM-303D: Front Knock Sensor (KS). Signal Too Low (B5254T3; 2006-2007)
- ECM-303D: Front Knock Sensor (KS). Signal Too Low (B5254T7; 2008-2011)
- ECM-303D: Front Knock Sensor (KS). Signal Too Low (B5254T3; 2005)
- ECM-304C: Rear Knock Sensor (KS). Signal Too High (B5254T3; 2006-2007)
- ECM-304C: Rear Knock Sensor (KS). Signal Too High (B5254T7; 2008-2011)
- ECM-304C: Rear Knock Sensor (KS). Signal Too High (B5254T3; 2005)
- ECM-304D: Rear Knock Sensor (KS). Signal Too Low (B5254T3; 2006-2007)
- ECM-304D: Rear Knock Sensor (KS). Signal Too Low (B5254T7; 2008-2011)
- ECM-304D: Rear Knock Sensor (KS). Signal Too Low (B5254T3; 2005)
- ECM-3050: Knock Control. Internal Fault (B5254T3; 2005-2007)
- ECM-3050: Knock Control. Internal Fault (B5254T7; 2008-2011)
- ECM-3060: Knock Control. Internal Fault (B5254T3; 2005-2007)
- ECM-3060: Knock Control. Internal Fault (B5254T7; 2008-2011)
- ECM-3100: Engine Speed (Rpm) Sensor. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-3100: Misfire, At Least One Cylinder. Start Up (B5254T3; 2005-2007)
- ECM-3100: Misfire, At Least One Cylinder. Start Up (B5254T7; 2008-2011)
- ECM-310A: Engine Speed (Rpm) Sensor. Signal Faulty/Intermittent Fault (B5244S4; B5244S7; 2005-2010)
- ECM-310C: Misfire, At Least One Cylinder. Catalytic Converter Damage (B5254T3; 2005-2007)
- ECM-310C: Misfire, At Least One Cylinder. Catalytic Converter Damage (B5254T7; 2008-2011)
- ECM-310D: Engine Speed (Rpm) Sensor. Faulty Signal (B5244S4; B5244S7; 2008-2010)
- ECM-310D: Misfire, At Least One Cylinder. Affects Emissions (B5254T3; 2005-2007)
- ECM-310D: Misfire, At Least One Cylinder. Affects Emissions (B5254T7; 2008-2011)
- ECM-3110: Misfire Cylinder 1. Start Up (B5254T3; 2005-2007)
- ECM-3110: Misfire Cylinder 1. Start Up (B5254T7; 2008-2011)
- ECM-311C: Misfire Cylinder 1. Catalytic Converter Damage (B5254T3; 2005-2007)
- ECM-311C: Misfire Cylinder 1. Catalytic Converter Damage (B5254T7; 2008-2011)
- ECM-311D: Misfire Cylinder 1. Emissions Impact (B5254T3; 2005-2007)
- ECM-311D: Misfire Cylinder 1. Emissions Impact (B5254T7; 2008-2011)
- ECM-3200: Ignition Coil. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-3300: Engine Speed (Rpm) Sensor. Signal Missing (B5254T3; 2005-2007)
- ECM-3300: Engine Speed (Rpm) Sensor. Signal Missing (B5254T7; 2008-2011)
- ECM-330B: Engine Speed (Rpm) Sensor. Signal Missing (B5254T3; 2005-2007)
- ECM-330B: Engine Speed (Rpm) Sensor. Signal Missing (B5254T7; 2008-2011)
- ECM-33X0: Ignition Coil X. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-3400: Camshaft Position (CMP) Sensor, Intake. Faulty Signal (B5254T3; 2005-2007)
- ECM-3400: Camshaft Position (CMP) Sensor, Intake. Faulty Signal (B5254T7; 2008-2011)
- ECM-3400: Knock Sensor (KS). Signal Too High (B5244S4; B5244S7; 2005-2010)
- ECM-3400: Knock Sensor (KS). Signal Too Low (B5244S4; B5244S7; 2005-2010)
- ECM-340A: Knock Sensor (KS). Too Little Roar (B5244S4; B5244S7; 2005-2010)
- ECM-340A: Knock Sensor (KS). Too Much Roar (B5244S4; B5244S7; 2005-2010)
- ECM-340B: Camshaft Position (CMP) Sensor, Intake. Signal Missing (B5254T3; 2005-2007)
- ECM-340B: Camshaft Position (CMP) Sensor, Intake. Signal Missing (B5254T7; 2008-2011)
- ECM-340C: Camshaft Position Sensor, Intake. Signal Too High (B5254T3; 2005)
- ECM-340C: Camshaft Position Sensor, Intake. Signal Too High (B5254T3; 2006-2007)
- ECM-340C: Camshaft Position Sensor, Intake. Signal Too High (B5254T7; 2008-2011)
- ECM-340D: Camshaft Position Sensor, Intake. Signal Too Low (B5254T3; 2005)
- ECM-340D: Camshaft Position Sensor, Intake. Signal Too Low (B5254T3; 2006-2007)
- ECM-340D: Camshaft Position Sensor, Intake. Signal Too Low (B5254T7; 2008-2011)
- ECM-3410: Camshaft Position (CMP) Sensor, Exhaust. Faulty Signal (B5254T3; 2005-2007)
- ECM-3410: Camshaft Position (CMP) Sensor, Exhaust. Faulty Signal (B5254T7; 2008-2011)
- ECM-341B: Camshaft Position (CMP) Sensor, Exhaust. Signal Missing (B5254T3; 2005-2007)
- ECM-341B: Camshaft Position (CMP) Sensor, Exhaust. Signal Missing (B5254T7; 2008-2011)
- ECM-341C: Camshaft Position Sensor, Exhaust. Signal Too High (B5254T3; 2005)
- ECM-341C: Camshaft Position Sensor, Exhaust. Signal Too High (B5254T3; 2006-2007)
- ECM-341C: Camshaft Position Sensor, Exhaust. Signal Too High (B5254T7; 2008-2011)
- ECM-341D: Camshaft Position Sensor, Exhaust. Signal Too Low (B5254T3; 2005)
- ECM-341D: Camshaft Position Sensor, Exhaust. Signal Too Low (B5254T3; 2006-2007)
- ECM-341D: Camshaft Position Sensor, Exhaust. Signal Too Low (B5254T7; 2008-2011)
- ECM-342B: Camshaft Position (CMP) Sensor. Signal Missing (B5254T3; 2005-2007)
- ECM-342B: Camshaft Position (CMP) Sensor. Signal Missing (B5254T7; 2008-2011)
- ECM-3502: Misfire, Emission Effect. Misfire CYL 1 (B5244S4; B5244S7; 2005-2010)
- ECM-3502: Misfire, Emission Effect. Misfire, At Least One Cylinder (B5244S4; B5244S7; 2005-2010)
- ECM-3503: Misfire, Catalytic Converter Damage. Misfire CYL 1 (B5244S4; B5244S7; 2005-2010)
- ECM-3503: Misfire, Catalytic Converter Damage. Misfire, At Least One Cylinder (B5244S4; B5244S7; 2005-2010)
- ECM-360B: Ignition Coil Cylinder 1. Signal Missing (B5254T3; 2005)
- ECM-360B: Ignition Coil Cylinder 1. Signal Missing (B5254T3; 2006-2007)
- ECM-360B: Ignition Coil Cylinder 1. Signal Missing (B5254T7; 2008-2011)
- ECM-360C: Ignition Coil Cylinder 1. Signal Too High (B5254T3; 2006-2007)
- ECM-360C: Ignition Coil Cylinder 1. Signal Too High (B5254T3; 2005)
- ECM-360C: Ignition Coil Cylinder 1. Signal Too High (B5254T7; 2008-2011)
- ECM-360D: Ignition Coil Cylinder 1. Signal Too Low (B5254T3; 2005)
- ECM-360D: Ignition Coil Cylinder 1. Signal Too Low (B5254T3; 2006-2007)
- ECM-360D: Ignition Coil Cylinder 1. Signal Too Low (B5254T7; 2008-2011)
- ECM-365C: Ignition Timing Control During Cold Start (B5254T7; 2010-2011)
- ECM-4000: Canister Purge (Cp) Valve. Signal Too High (B5244S4; B5244S7; 2005-2010)
- ECM-4000: Canister Purge (Cp) Valve. Signal Too Low (B5244S4; B5244S7; 2005-2010)
- ECM-400A: Canister Purge (Cp) Valve. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-400C: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Signal Too High (B5254T3; 2005-2007)
- ECM-400D: Three-Way Catalytic Converter (TWC) Efficiency, Bank 1. Signal Too Low (B5254T7; 2008-2011)
- ECM-4038: Fuel Tank Filler Cap. Missing (B5244S4; B5244S7; 2005-2010)
- ECM-4050: Fuel Level Sensor. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-405A: Fuel Level Sensor. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-4201: Three-Way Catalytic Converter (TWC) Efficiency. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-420C: Evaporative Emission System (EVAP) Valve. Open (B5254T3; 2005-2007)
- ECM-420C: Evaporative Emission System (EVAP) Valve. Open (B5254T7; 2008-2011)
- ECM-420D: Evaporative Emission System (EVAP). Closed (B5254T3; 2005-2007)
- ECM-420D: Evaporative Emission System (EVAP). Closed (B5254T7; 2008-2011)
- ECM-421B: Canister Purge (Cp) Valve. Signal Missing (B5254T3; 2005-2007)
- ECM-421B: Canister Purge (Cp) Valve. Signal Missing (B5254T7; 2008-2011)
- ECM-421C: Evaporative Emission System (EVAP) Valve. Signal Too High (B5254T3; 2005-2007)
- ECM-421C: Evaporative Emission System (EVAP) Valve. Signal Too High (B5254T7; 2008-2011)
- ECM-421D: Evaporative Emission System (EVAP) Valve. Signal Too Low (B5254T3; 2005-2007)
- ECM-421D: Evaporative Emission System (EVAP) Valve. Signal Too Low (B5254T7; 2008-2011)
- ECM-4308: Tank System, Leak. Large Leak (B5244S4; B5244S7; 2005-2010)
- ECM-430C: Fuel Tank System, Leakage. Fuel Tank Filler Cap Missing (B5254T3; 2005-2007)
- ECM-430C: Fuel Tank System, Leakage. Fuel Tank Filler Cap Missing (B5254T7; 2008-2011)
- ECM-4310: Leak Diagnostic Unit, Pump. Signal Too High (B5244S4; B5244S7; 2005-2010)
- ECM-4310: Leak Diagnostic Unit, Pump. Signal Too Low (B5244S4; B5244S7; 2005-2010)
- ECM-431A: Leak Diagnostic Unit, Pump. Faulty Signal (B5244S4; B5244S7; 2005-2010)
- ECM-431B: Leak Diagnostic Unit, Preheating. Signal Missing (B5254T3; 2005)
- ECM-431B: Leak Diagnostic Unit, Preheating. Signal Missing (B5254T3; 2006-2007)
- ECM-431B: Leak Diagnostic Unit, Preheating. Signal Missing (B5254T7; 2008-2011)
- ECM-431C: Leak Diagnostic Unit, Preheating. Signal Too High (B5254T3; 2005)
- ECM-431C: Leak Diagnostic Unit, Preheating. Signal Too High (B5254T3; 2006-2007)
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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