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.
2003 Volvo V70 Base, 2.4 61, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Control Module (ECM) Diagnostic Trouble Codes (DTC) - 11 Of 14
- ECM-901A: Communication Control Module, Communication Problems, Faulty Signal, Permanent Fault-901A Engine Control Module (ECM) Communication, Communication Fault (B5234T3; B5244T3; 2001)
- ECM-901A: Engine Control Module (ECM) Communication, Faulty Signal (B5244S; 2001-2002)
- ECM-901E: Engine Control Module (ECM), Internal Fault (B5234T3; B5244T3; 2001)
- ECM-902A: Communication With Throttle Unit, Faulty Signal (B5244S; 2001-2002)
- ECM-902A: Communication With Throttle Unit, Signal Missing (B5234T3; B5244T3; 2001)
- ECM-902A: Communication With Throttle Unit, Signal Too High (B5234T3; B5244T3; 2001)
- ECM-902A: Throttle Unit Communication, Signal Too Low (B5234T3; B5244T3; 2001)
- ECM-902B: Communication With Throttle Unit, Signal Too High (B5244S; 2001-2002)
- ECM-902B: Communication With Throttle Unit, Signal Too Low (B5244S; 2001-2002)
- ECM-902C: Engine Control Module (ECM), Internal Fault (B5244S; 2003-2007)
- ECM-902C: Engine Control Module (ECM), Internal Fault (B5244S6; 2003-2006)
- ECM-903C: Reconfiguration Emission System, Information (B5234T3; B5244T3; 2001)
- ECM-903C: Throttle Position (TP) Sensor, Faulty Signal (B5234T3; 2002-2004)
- ECM-903C: Throttle Position (TP) Sensor, Faulty Signal (B5244T3; 2002-2003)
- ECM-903C: Throttle Position (TP) Sensor, Faulty Signal (B5254T2; 2003-2004)
- ECM-903C: Throttle Position (TP) Sensor, Faulty Signal (B5254T4; 2004)
- ECM-903F: Throttle Position (TP), Signal Missing (B5244S; 2001-2002)
- ECM-903F: Throttle Position (TP), Signal Too High (B5234T3; B5244T3; 2001)
- ECM-903F: Throttle Position (TP), Signal Too High (B5244S; 2001-2002)
- ECM-903F: Throttle Position (TP), Signal Too Low/Signal Missing (B5234T3; B5244T3; 2001)
- ECM-904C: Reconfiguration Emission System, Information (B5234T3; B5244T3; 2001-2002)
- ECM-904C: Throttle Position (TP) Sensor 1 And 2, Faulty Signal (B5234T3; B5244T3; 2001-2002)
- ECM-904D: Text Message, Information (B5234T3; B5244T3; 2001-2002)
- ECM-9050: Memory Fault In Ram, Internal Fault, Intermittent Fault (B5234T3; 2002-2004)
- ECM-9050: Memory Fault In Ram, Internal Fault, Intermittent Fault (B5244T3; 2002-2003)
- ECM-9050: Memory Fault In Ram, Internal Fault, Intermittent Fault (B5254T2; 2003-2004)
- ECM-9050: Memory Fault In Ram, Internal Fault, Intermittent Fault (B5254T4; 2004)
- ECM-9050: Memory Fault In Ram, Internal Fault, Permanent Fault (B5234T3; 2002-2004)
- ECM-9050: Memory Fault In Ram, Internal Fault, Permanent Fault (B5244T3; 2002-2003)
- ECM-9050: Memory Fault In Ram, Internal Fault, Permanent Fault (B5254T2; 2003-2004)
- ECM-9050: Memory Fault In Ram, Internal Fault, Permanent Fault (B5254T4; 2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Intermittent Fault (B5234T3; 2002-2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Intermittent Fault (B5244T3; 2002-2003)
- ECM-9060: Memory Fault In ROM, Internal Fault, Intermittent Fault (B5254T2; 2003-2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Intermittent Fault (B5254T4; 2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Permanent Fault (B5234T3; 2002-2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Permanent Fault (B5244T3; 2002-2003)
- ECM-9060: Memory Fault In ROM, Internal Fault, Permanent Fault (B5254T2; 2003-2004)
- ECM-9060: Memory Fault In ROM, Internal Fault, Permanent Fault (B5254T4; 2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5234T3; 2002-2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5244T3; 2002-2003)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5254T2; 2003-2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5254T4; 2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5234T3; 2002-2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5244T3; 2002-2003)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5254T2; 2003-2004)
- ECM-9070: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5254T4; 2004)
- ECM-9100: Clutch Pedal Position Sensor, Faulty Signal (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-9100: Engine Control Module (ECM), Faulty Signal (B5234T3; 2002-2004)
- ECM-9100: Engine Control Module (ECM), Faulty Signal (B5244T3; 2002-2003)
- ECM-9100: Engine Control Module (ECM), Faulty Signal (B5254T2; 2003-2004)
- ECM-9100: Engine Control Module (ECM), Faulty Signal (B5254T4; 2004)
- ECM-910B: Clutch Pedal Sensor, Signal Missing (B5244T5; B5254T2; B5254T4; 2005-2006)
- ECM-910C: Clutch Pedal Sensor, Signal Too High (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-910D: Clutch Pedal Sensor, Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007)
- ECM-910E: Throttle Valve, Internal Fault (B5234T3; B5244T3; 2001)
- ECM-910E: Throttle Valve, Internal Fault (B5244S; 2001-2002)
- ECM-9117: Throttle Unit, Faulty Signal (B5234T3; 2002-2004)
- ECM-9117: Throttle Unit, Faulty Signal (B5244T3; 2002-2003)
- ECM-9117: Throttle Unit, Faulty Signal (B5254T2; 2003-2004)
- ECM-9117: Throttle Unit, Faulty Signal (B5254T4; 2004)
- ECM-911A: Throttle Unit Communication, Faulty Communication (B5234T3; B5244T3; 2001)
- ECM-911A: Throttle Unit Communication, Faulty Communication (B5244S; 2001-2002)
- ECM-912A: Communication With The Engine Control Module (ECM), Signal Missing (B5234T3; B5244T3; 2001)
- ECM-912A: Communication With The Engine Control Module (ECM), Signal Missing (B5244S; 2001-2002)
- ECM-913C: Throttle Unit, Faulty Signal (B5234T3; 2002-2004)
- ECM-913C: Throttle Unit, Faulty Signal (B5244T3; 2002-2003)
- ECM-913C: Throttle Unit, Faulty Signal (B5254T2; 2003-2004)
- ECM-913C: Throttle Unit, Faulty Signal (B5254T4; 2004)
- ECM-913F: Throttle Position (TP), Non Plausible Request (B5234T3; B5244T3; 2001)
- ECM-913F: Throttle Position (TP), Non Plausible Request (B5244S; 2001-2002)
- ECM-913F: Throttle Unit, Faulty Signal (B5234T3; 2002-2004)
- ECM-913F: Throttle Unit, Faulty Signal (B5244T3; 2002-2003)
- ECM-913F: Throttle Unit, Faulty Signal (B5254T2; 2003-2004)
- ECM-913F: Throttle Unit, Faulty Signal (B5254T4; 2004)
- ECM-914F: Throttle Position (TP) Sensor 1 And 2, Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-914F: Throttle Position (TP) Sensor 1 And 2, Faulty Signal (B5244S; 2001-2002)
- ECM-914F: Throttle Unit, Faulty Signal (B5234T3; 2002-2004)
- ECM-914F: Throttle Unit, Faulty Signal (B5244T3; 2002-2003)
- ECM-914F: Throttle Unit, Faulty Signal (B5254T2; 2003-2004)
- ECM-914F: Throttle Unit, Faulty Signal (B5254T4; 2004)
- ECM-9150: Throttle Position (TP) Sensor 1, Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-9150: Throttle Position (TP) Sensor 1, Faulty Signal (B5244S; 2001-2002)
- ECM-9150: Throttle Unit, Potentiometer 1, Faulty Signal (B5234T3; 2002-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Faulty Signal (B5244T3; 2002-2003)
- ECM-9150: Throttle Unit, Potentiometer 1, Faulty Signal (B5254T2; 2003-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Faulty Signal (B5254T4; 2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too High (B5234T3; 2002-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too High (B5244T3; 2002-2003)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too High (B5254T2; 2003-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too High (B5254T4; 2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too Low (B5234T3; 2002-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too Low (B5244T3; 2002-2003)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too Low (B5254T2; 2003-2004)
- ECM-9150: Throttle Unit, Potentiometer 1, Signal Too Low (B5254T4; 2004)
- ECM-9160: Throttle Position (TP) Sensor 2, Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-9160: Throttle Position (TP) Sensor 2, Faulty Signal (B5244S; 2001-2002)
- ECM-9160: Throttle Unit, Potentiometer 2, Faulty Signal (B5234T3; 2002-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Faulty Signal (B5244T3; 2002-2003)
- ECM-9160: Throttle Unit, Potentiometer 2, Faulty Signal (B5254T2; 2003-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Faulty Signal (B5254T4; 2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too High (B5234T3; 2002-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too High (B5244T3; 2002-2003)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too High (B5254T2; 2003-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too High (B5254T4; 2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too Low (B5234T3; 2002-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too Low (B5244T3; 2002-2003)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too Low (B5254T2; 2003-2004)
- ECM-9160: Throttle Unit, Potentiometer 2, Signal Too Low (B5254T4; 2004)
- ECM-9170: Throttle Unit, Faulty Signal (B5234T3; 2002-2004)
- ECM-9170: Throttle Unit, Faulty Signal (B5244T3; 2002-2003)
- ECM-9170: Throttle Unit, Faulty Signal (B5254T2; 2003-2004)
- ECM-9170: Throttle Unit, Faulty Signal (B5254T4; 2004)
- ECM-917F: Accelerator Pedal Position, Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-917F: Accelerator Pedal Position, Faulty Signal (B5244S; 2001-2002)
- ECM-917F: Throttle Unit, Faulty Signal (B5234T3; B5244T3; 2002)
- ECM-9180: Accelerator Pedal (AP) Position Sensor, Faulty Signal (B5234T3; B5244T3; 2001)
- ECM-9180: Accelerator Pedal (AP) Position Sensor, Faulty Signal (B5244S; 2001-2002)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5234T3; 2002-2004)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5244T3; 2002-2003)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5254T2; 2003-2004)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Intermittent Fault (B5254T4; 2004)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5234T3; 2002-2004)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5244T3; 2002-2003)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5254T2; 2003-2004)
- ECM-918A: Engine Control Module (ECM), Internal Fault, Permanent Fault (B5254T4; 2004)
- ECM-918F: Accelerator Pedal (AP) Position Sensor, Faulty Signal (B5244S; 2001-2002)
- ECM-9190: Throttle Position (TP), Faulty Current (B5234T3; B5244T3; 2001)
- ECM-9190: Throttle Position (TP), Faulty Current (B5244S; 2001-2002)
- ECM-919A: Engine Control Module (ECM), Faulty Signal (B5234T3; 2002-2004)
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.