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.
2002 Volvo V70 Base, 2.4 61, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Control Module (ECM) Diagnostic Trouble Codes (DTC) - 13 Of 14
- ECM-9400: Brake Pedal Position Sensor, Faulty Signal. Signal Too High. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor, Faulty Signal. Signal Too Low. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor, Faulty Signal. Signal Too Low. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor. Faulty Signal. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor. Faulty Signal. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor. Signal Missing. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Position Sensor. Signal Missing. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9400: Brake Pedal Sensor. Faulty Signal (B5234T3; 2002-2004)
- ECM-9400: Brake Pedal Sensor. Faulty Signal (B5244S; 2001-2002)
- ECM-9400: Brake Pedal Sensor. Faulty Signal (B5244T3; 2002-2003)
- ECM-9400: Brake Pedal Sensor. Faulty Signal (B5254T2; 2003-2004)
- ECM-9400: Brake Pedal Sensor. Faulty Signal (B5254T4; 2004)
- ECM-9400: Brake Pedal Sensor. Signal Missing (B5234T3; 2002-2004)
- ECM-9400: Brake Pedal Sensor. Signal Missing (B5244T3; 2002-2003)
- ECM-9400: Brake Pedal Sensor. Signal Missing (B5254T2; 2003-2004)
- ECM-9400: Brake Pedal Sensor. Signal Missing (B5254T4; 2004)
- ECM-9400: Brake Pedal Sensor. Signal Too High (B5234T3; 2002-2004)
- ECM-9400: Brake Pedal Sensor. Signal Too High (B5244S; 2001)
- ECM-9400: Brake Pedal Sensor. Signal Too High (B5244T3; 2002-2003)
- ECM-9400: Brake Pedal Sensor. Signal Too High (B5254T2; 2003-2004)
- ECM-9400: Brake Pedal Sensor. Signal Too High (B5254T4; 2004)
- ECM-9400: Brake Pedal Sensor. Signal Too Low (B5244S; 2001)
- ECM-940C: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-940C: Brake Control Module (BCM). Faulty Signal (B5244S; 2003-2007)
- ECM-940C: Brake Control Module (BCM). Faulty Signal (B5244S6; 2003-2006)
- ECM-940C: Brake Control Module (BCM). Signal Missing (B5244S; B5244S6; 2003-2004)
- ECM-940C: Brake Control Module (BCM). Signal Missing (B5244S; 2005-2007)
- ECM-940C: Brake Control Module (BCM). Signal Missing (B5244S6; 2005-2006)
- ECM-940D: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-941C: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-941C: Stop Lamp Switch. Faulty Signal (B5244S; 2003-2007)
- ECM-941C: Stop Lamp Switch. Faulty Signal (B5244S6; 2003-2006)
- ECM-941D: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-941F: Brake Pedal Position. Faulty Signal (B5244S; 2001)
- ECM-941F: Brake Pedal Sensor, Incorrect Signal. Incorrect Signal (B5244S; 2002)
- ECM-950C: Idle Air Trim. Signal Too Low (B5244T5; B5254T4; 2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Analog Signal Too High (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Analog Signal Too High (B5244S6; 2003-2006)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Analog Signal Too Low (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Analog Signal Too Low (B5244S6; 2003-2006)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Comparison Fault (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Comparison Fault (B5244S6; 2003-2006)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Faulty Pulse Width Modulation (PWM) Signal (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Faulty Pulse Width Modulation (PWM) Signal (B5244S6; 2003-2006)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Pulse Width Modulation (PWM) Signal Too High (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Pulse Width Modulation (PWM) Signal Too High (B5244S6; 2003-2006)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Pulse Width Modulation (PWM) Signal Too Low (B5244S; 2003-2007)
- ECM-950C: Accelerator Pedal (AP) Position Sensor. Pulse Width Modulation (PWM) Signal Too Low (B5244S6; 2003-2006)
- ECM-950D: Idle Air Trim. Signal Too High (B5244T5; B5254T4; 2007)
- ECM-950F: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B5244S; 2001-2002)
- ECM-951C: Engine Control Module (ECM), Idle Air Trim. Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-951D: Engine Control Module (ECM), Idle Air Trim. Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-951F: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B5244S; 2001-2002)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Faulty Signal (B5234T3; 2002-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Faulty Signal (B5244T3; 2002-2003)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Faulty Signal (B5254T2; 2003-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Faulty Signal (B5254T4; 2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too High (B5234T3; 2002-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too High (B5244T3; 2002-2003)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too High (B5254T2; 2003-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too High (B5254T4; 2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too Low (B5234T3; 2002-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too Low (B5244T3; 2002-2003)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too Low (B5254T2; 2003-2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Analog Signal. Signal Too Low (B5254T4; 2004)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too Low. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9520: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too Low. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B5244S; 2001-2002)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Faulty Signal. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Faulty Signal. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Signal Missing (B5244S; 2001-2002)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Signal Too High (B5244S; 2001-2002)
- ECM-9520: Accelerator Pedal (AP) Position Sensor. Signal Too Low (B5244S; 2001-2002)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too High (B5234T3; 2002-2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too High (B5244T3; 2002-2003)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too High (B5254T2; 2003-2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too High (B5254T4; 2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too Low (B5234T3; 2002-2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too Low (B5244T3; 2002-2003)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too Low (B5254T2; 2003-2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Too Low (B5254T4; 2004)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too High. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too High. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too Low. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9530: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too Low. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9530: Accelerator Pedal (AP) Position Sensor. Signal Too High (B5244S; 2001-2002)
- ECM-9530: Accelerator Pedal (AP) Position Sensor. Signal Too Low (B5244S; 2001-2002)
- ECM-9540: Accelerator Pedal (AP) Sensor Power Supply. Signal Too High (B5244S; 2001-2002)
- ECM-9540: Accelerator Pedal (AP) Sensor Power Supply. Signal Too Low (B5244S; 2001-2002)
- ECM-9540: Accelerator Pedal Sensor. Signal Too High. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9540: Accelerator Pedal Sensor. Signal Too High. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9540: Accelerator Pedal Sensor. Signal Too Low. Intermittent Fault (B5234T3; B5244T3; 2001)
- ECM-9540: Accelerator Pedal Sensor. Signal Too Low. Permanent Fault (B5234T3; B5244T3; 2001)
- ECM-9540: Accelerator Pedal (AP) Position Sensor, Digital Signal. Faulty Signal (B5234T3; 2002-2004)
- ECM-9540: Accelerator Pedal (AP) Position Sensor, Digital Signal. Faulty Signal (B5244T3; 2002-2003)
- ECM-9540: Accelerator Pedal (AP) Position Sensor, Digital Signal. Faulty Signal (B5254T2; 2003-2004)
- ECM-9540: Accelerator Pedal (AP) Position Sensor, Digital Signal. Faulty Signal (B5254T4; 2004)
- ECM-958F: Accelerator Pedal Sensor. Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-959F: Accelerator Pedal Sensor. Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-960C: Engine Control Module (ECM), Torque Signal. Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2006)
- ECM-9700: Accelerator Pedal (AP) Position Sensor, Digital Signal. Faulty Signal (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-970B: Accelerator Pedal (AP) Position Sensor, Digital Signal. Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-9800: Engine Control Module (ECM), Torque Signal. Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-980A: Torque-Limiting. Information (B5234T3; B5244T3; 2001)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; 2002-2004)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5244T3; 2002-2003)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T2; 2003-2004)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T4; 2004)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; 2002-2004)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5244T3; 2002-2003)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T2; 2003-2004)
- ECM-980A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T4; 2004)
- ECM-980F: Air Flow. Faulty Flow (B5244S; 2001-2002)
- ECM-9810: Engine Control Module (ECM), Engine Speed (Rpm). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-9818: Brake Vacuum. Too Low Vacuum (B5244S; 2001-2002)
- ECM-9818: Brake Vacuum. Reduced Brake Vacuum (B5244S; 2003-2007)
- ECM-9818: Brake Vacuum. Reduced Brake Vacuum (B5244S6; 2003-2006)
- ECM-981A: Torque. Too High Torque (B5234T3; B5244T3; 2001)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; 2002-2004)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5244T3; 2002-2003)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T2; 2003-2004)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T4; 2004)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; 2002-2004)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5244T3; 2002-2003)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T2; 2003-2004)
- ECM-981A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T4; 2004)
- ECM-9820: Engine Control Module (ECM), Load Signal. Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-982A: Air Mass. Level Too Low (B5234T3; B5244T3; 2001)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5244T3; 2002-2003)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T2; 2003)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5244T3; 2002-2003)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-982A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T2; 2003)
- ECM-9830: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T4; 2007)
- ECM-983A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-983A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-983B: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-983C: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-983D: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-9840: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-984A: Engine Control Module (ECM), Load Signal. Internal Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-984B: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-9850: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2006)
- ECM-985A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-985A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-9860: Engine Control Module (ECM). Internal Fault (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-986A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-986A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-988A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-988A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5234T3; B5254T2; B5254T4; 2004)
- ECM-990A: Idle Air Trim. Speed Too High/Low (B5234T3; B5244T3; 2001)
- ECM-990A: Idle Air Trim. Faulty Signal (B5234T3; 2002-2004)
- ECM-990A: Idle Air Trim. Faulty Signal (B5244T3; 2002-2003)
- ECM-990A: Idle Air Trim. Faulty Signal (B5254T2; 2003-2004)
- ECM-990A: Idle Air Trim. Faulty Signal (B5254T4; 2004)
- ECM-990F: Torque Monitoring. Faulty Signal (B5244S; 2003-2007)
- ECM-990F: Torque Monitoring. Faulty Signal (B5244S6; 2003-2006)
- ECM-9918: Electronic Throttle Module (ETM). Faulty Signal (B5244S; 2003-2007)
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.