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.
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HOMESERVICE MANUALSVOLVO2003S80 T-6REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL MODULE (ECM) DIAGNOSTIC TROUBLE CODES - 10 OF 11
2003 Volvo S80 T-6
Engine Control Module (ECM) Diagnostic Trouble Codes - 10 Of 11
2003 Volvo S80 T-6SECTION Engine Control Module (ECM) Diagnostic Trouble Codes - 10 Of 11
- ECM-901A: Engine Control Module (ECM) Communication. Faulty Communication (B6294S; 2000-2001)
- ECM-901A: Engine Control Module (ECM) Communication. Faulty Communication (B6304S3; 1999)
- ECM-901A: Communication Control Module, Communication Problems. Faulty Signal. Permanent Fault-901A Engine Control Module (ECM) Communication. Communication Fault (B6284T; 1999-2001)
- ECM-901A: Communication Control Module, Communication Problems. Faulty Signal. Permanent Fault-901A Engine Control Module (ECM) Communication. Communication Fault (B6294S; 2000-2001)
- ECM-901A: Communication Control Module, Communication Problems. Faulty Signal. Permanent Fault-901A Engine Control Module (ECM) Communication. Communication Fault (B6304S3; 1999)
- ECM-901E: Engine Control Module (ECM). Internal Fault (B6284T; 1999-2001)
- ECM-901E: Engine Control Module (ECM). Internal Fault (B6294S; 2000-2001)
- ECM-901E: Engine Control Module (ECM). Internal Fault (B6304S3; 1999)
- ECM-902A: Communication With Throttle Unit. Signal Missing (B6284T; 1999-2001)
- ECM-902A: Communication With Throttle Unit. Signal Missing (B6294S; 2000-2001)
- ECM-902A: Communication With Throttle Unit. Signal Missing (B6304S3; 1999)
- ECM-902A: Communication With Throttle Unit. Signal Too High (B6284T; 1999-2001)
- ECM-902A: Communication With Throttle Unit. Signal Too High (B6294S; 2000-2001)
- ECM-902A: Communication With Throttle Unit. Signal Too High (B6304S3; 1999)
- ECM-902A: Throttle Unit Communication. Signal Too Low (B6284T; 1999-2001)
- ECM-902A: Throttle Unit Communication. Signal Too Low (B6294S; 2000-2001)
- ECM-902A: Throttle Unit Communication. Signal Too Low (B6304S3; 1999)
- ECM-903C: Reconfiguration Emission System. Information (B6284T; 1999-2001)
- ECM-903C: Reconfiguration Emission System. Information (B6294S; 2000-2001)
- ECM-903C: Reconfiguration Emission System. Information (B6304S3; 1999)
- ECM-903C: Throttle Position (TP) Sensor. Faulty Signal (B5254T2; 2004)
- ECM-903C: Throttle Position (TP) Sensor. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-903F: Throttle Position (TP). Signal Too High (B6284T; 1999-2001)
- ECM-903F: Throttle Position (TP). Signal Too High (B6294S; 2000-2001)
- ECM-903F: Throttle Position (TP). Signal Too High (B6304S3; 1999)
- ECM-903F: Throttle Position (TP). Signal Too Low/Signal Missing (B6284T; 1999-2001)
- ECM-903F: Throttle Position (TP). Signal Too Low/Signal Missing (B6294S; 2000-2001)
- ECM-903F: Throttle Position (TP). Signal Too Low/Signal Missing (B6304S3; 1999)
- ECM-904C: Reconfiguration Emission System. Information (B6284T; 1999-2001)
- ECM-904C: Reconfiguration Emission System. Information (B6294S; 2000-2001)
- ECM-904C: Reconfiguration Emission System. Information (B6294S2; B6294T; 2002)
- ECM-904C: Reconfiguration Emission System. Information (B6304S3; 1999)
- ECM-904C: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6284T; 1999-2001)
- ECM-904C: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6294S; 2000-2001)
- ECM-904C: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6294S2; B6294T; 2002)
- ECM-904C: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6304S3; 1999)
- ECM-904D: Text Message. Information (B6284T; 1999-2001)
- ECM-904D: Text Message. Information (B6294S; 2000-2001)
- ECM-904D: Text Message. Information (B6294S2; B6294T; 2002)
- ECM-904D: Text Message. Information (B6304S3; 1999)
- ECM-9050: Memory Fault In Ram. Internal Fault. Intermittent Fault (B5254T2; 2004)
- ECM-9050: Memory Fault In Ram. Internal Fault. Intermittent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9050: Memory Fault In Ram. Internal Fault. Permanent Fault (B5254T2; 2004)
- ECM-9050: Memory Fault In Ram. Internal Fault. Permanent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9060: Memory Fault In ROM. Internal Fault. Intermittent Fault (B5254T2; 2004)
- ECM-9060: Memory Fault In ROM. Internal Fault. Intermittent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9060: Memory Fault In ROM. Internal Fault. Permanent Fault (B5254T2; 2004)
- ECM-9060: Memory Fault In ROM. Internal Fault. Permanent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9070: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T2; 2004)
- ECM-9070: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9070: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T2; 2004)
- ECM-9070: Engine Control Module (ECM). Internal Fault. Permanent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9100: Clutch Pedal Position Sensor. Faulty Signal (B5254T2; B6294S2; B6294T; 2005-2006)
- ECM-9100: Engine Control Module (ECM). Faulty Signal (B5254T2; 2004)
- ECM-9100: Engine Control Module (ECM). Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-910B: Clutch Pedal Sensor. Signal Missing (B5254T2; B6294S2; B6294T; 2005-2006)
- ECM-910C: Clutch Pedal Sensor. Signal Too High (B5254T2; B6294S2; B6294T; 2005-2006)
- ECM-910D: Clutch Pedal Sensor. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006)
- ECM-910E: Throttle Valve. Internal Fault (B6284T; 1999-2001)
- ECM-910E: Throttle Valve. Internal Fault (B6294S; 2000-2001)
- ECM-910E: Throttle Valve. Internal Fault (B6304S3; 1999)
- ECM-9117: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-9117: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-911A: Throttle Unit Communication. Faulty Communication (B6284T; 1999-2001)
- ECM-911A: Throttle Unit Communication. Faulty Communication (B6294S; 2000-2001)
- ECM-911A: Throttle Unit Communication. Faulty Communication (B6304S3; 1999)
- ECM-912A: Communication With The Engine Control Module (ECM). Signal Missing (B6284T; 1999-2001)
- ECM-912A: Communication With The Engine Control Module (ECM). Signal Missing (B6294S; 2000-2001)
- ECM-912A: Communication With The Engine Control Module (ECM). Signal Missing (B6304S3; 1999)
- ECM-913C: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-913C: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-913F: Throttle Position (TP). Non Plausible Request (B6284T; 1999-2001)
- ECM-913F: Throttle Position (TP). Non Plausible Request (B6294S; 2000-2001)
- ECM-913F: Throttle Position (TP). Non Plausible Request (B6304S3; 1999)
- ECM-913F: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-913F: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-914F: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6284T; 1999-2001)
- ECM-914F: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6294S; 2000-2001)
- ECM-914F: Throttle Position (TP) Sensor 1 And 2. Faulty Signal (B6304S3; 1999)
- ECM-914F: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-914F: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-9150: Throttle Position (TP) Sensor 1. Faulty Signal (B6284T; 1999-2001)
- ECM-9150: Throttle Position (TP) Sensor 1. Faulty Signal (B6294S; 2000-2001)
- ECM-9150: Throttle Position (TP) Sensor 1. Faulty Signal (B6304S3; 1999)
- ECM-9150: Throttle Unit, Potentiometer 1. Faulty Signal (B5254T2; 2004)
- ECM-9150: Throttle Unit, Potentiometer 1. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-9150: Throttle Unit, Potentiometer 1. Signal Too High (B5254T2; 2004)
- ECM-9150: Throttle Unit, Potentiometer 1. Signal Too High (B6294S2; B6294T; 2002-2004)
- ECM-9150: Throttle Unit, Potentiometer 1. Signal Too Low (B5254T2; 2004)
- ECM-9150: Throttle Unit, Potentiometer 1. Signal Too Low (B6294S2; B6294T; 2002-2004)
- ECM-9160: Throttle Position (TP) Sensor 2. Faulty Signal (B6284T; 1999-2001)
- ECM-9160: Throttle Position (TP) Sensor 2. Faulty Signal (B6294S; 2000-2001)
- ECM-9160: Throttle Position (TP) Sensor 2. Faulty Signal (B6304S3; 1999)
- ECM-9160: Throttle Unit, Potentiometer 2. Faulty Signal (B5254T2; 2004)
- ECM-9160: Throttle Unit, Potentiometer 2. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-9160: Throttle Unit, Potentiometer 2. Signal Too High (B5254T2; 2004)
- ECM-9160: Throttle Unit, Potentiometer 2. Signal Too High (B6294S2; B6294T; 2002-2004)
- ECM-9160: Throttle Unit, Potentiometer 2. Signal Too Low (B5254T2; 2004)
- ECM-9160: Throttle Unit, Potentiometer 2. Signal Too Low (B6294S2; B6294T; 2002-2004)
- ECM-9170: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-9170: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-917F: Accelerator Pedal Position. Faulty Signal (B6284T; 1999-2001)
- ECM-917F: Accelerator Pedal Position. Faulty Signal (B6294S; 2000-2001)
- ECM-917F: Accelerator Pedal Position. Faulty Signal (B6304S3; 1999)
- ECM-917F: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002)
- ECM-9180: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B6284T; 1999-2001)
- ECM-9180: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B6294S; 2000-2001)
- ECM-9180: Accelerator Pedal (AP) Position Sensor. Faulty Signal (B6304S3; 1999)
- ECM-918A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B5254T2; 2004)
- ECM-918A: Engine Control Module (ECM). Internal Fault. Intermittent Fault (B6294S2; B6294T; 2002-2004)
- ECM-918A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B5254T2; 2004)
- ECM-918A: Engine Control Module (ECM). Internal Fault. Permanent Fault (B6294S2; B6294T; 2002-2004)
- ECM-9190: Throttle Position (TP). Faulty Current (B6284T; 1999-2001)
- ECM-9190: Throttle Position (TP). Faulty Current (B6294S; 2000-2001)
- ECM-9190: Throttle Position (TP). Faulty Current (B6304S3; 1999)
- ECM-919A: Engine Control Module (ECM). Faulty Signal (B5254T2; 2004)
- ECM-919A: Engine Control Module (ECM). Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-91A7: Throttle Position (TP). Faulty Control (B6284T; 1999-2001)
- ECM-91A7: Throttle Position (TP). Faulty Control (B6294S; 2000)
- ECM-91A7: Throttle Position (TP). Faulty Control (B6294S; 2001)
- ECM-91A7: Throttle Position (TP). Faulty Control (B6304S3; 1999)
- ECM-91A7: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-91A7: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-91B7: Throttle Position (TP). Faulty Position (B6284T; 1999-2001)
- ECM-91B7: Throttle Position (TP). Faulty Position (B6294S; 2001)
- ECM-91B7: Throttle Position (TP). Faulty Position (B6294S; 2000)
- ECM-91B7: Throttle Position (TP). Faulty Position (B6304S3; 1999)
- ECM-91B7: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-91B7: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-91C7: Throttle Unit. Faulty Signal (B5254T2; 2004)
- ECM-91C7: Throttle Unit. Faulty Signal (B6294S2; B6294T; 2002-2004)
- ECM-91CF: Brake Pedal Position. Faulty Signal (B6284T; B6294S; 2001)
- ECM-91CF: Brake Pedal Position. Faulty Signal (B6284T; 1999-2000)
- ECM-91CF: Brake Pedal Position. Faulty Signal (B6294S; 2000)
- ECM-91CF: Brake Pedal Position. Faulty Signal (B6304S3; 1999)
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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.