ECM-901A - Engine control module (ECM) communication. Faulty signal
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug gilt.
Gilt für folgende Modelle:
7 ModelleC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008)
Modelle nach Baujahr und Motor anzeigen (20)
- Volvo C70 Cabriolet (1998–2005)2000Nur Motor: B5244S
- Volvo C70 Coupé (1998–2002)1999Nur Motor: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Nur Motor: B5244S
- Volvo S60 (2001–2009)2001Nur Motor: B5244S, B5244S2
- Volvo S60 (2001–2009)2002Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S60 (2001–2009)2003–2005Nur Motor: B5244SG, B5244SG2
- Volvo S60 (2001–2009)2006–2008Nur Motor: B5244SG
- Volvo S70 (1997–2000)1999Nur Motor: B5254S DENSO
- Volvo S70 (1997–2000)2000Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)1999–2000Nur Motor: B5244S, B5244S2
- Volvo S80 (1999–2006)2001Nur Motor: B5244S, B5244S2, B5244SG
- Volvo S80 (1999–2006)2002Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo S80 (1999–2006)2003–2005Nur Motor: B5244SG, B5244SG2
- Volvo S80 (1999–2006)2006Nur Motor: B5244SG
- Volvo V70 (1997–2000)1999Nur Motor: B5254S DENSO
- Volvo V70 (1997–2000)2000Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2001Nur Motor: B5244S, B5244S2, B5244SG
- Volvo V70 (2000–2008)2002Nur Motor: B5244S, B5244S2, B5244SG, B5244SG2
- Volvo V70 (2000–2008)2003–2005Nur Motor: B5244SG, B5244SG2
- Volvo V70 (2000–2008)2006–2008Nur Motor: B5244SG
Was bedeutet der Fehlercode?
The engine control module (ECM) sets the code when it picks up a serious disruption on the CAN network, the network over which the control modules in the car exchange information. When communication is blocked the throttle may be reconfigured and the car's drivability suffers. The fault may lie in the wiring, the connectors or a node on the network.
Mögliche Ursachen
- Loose connections or contact resistance at the CAN network connectors
- Break in one or both CAN signal wires
- Short to ground, to voltage or between the CAN wires
- Interference on the CAN signal wires
- A defective node in the CAN network
Was Sie tun können
- 1Check that the connectors in the CAN network are fully engaged and not oxidised
- 2Use a multimeter to confirm the CAN wires have no break and are not shorted to ground or voltage
- 3Look for chafed wires in the CAN network, especially where they run close to other cables
- 4Read the CAN codes in the other control modules first, since this code may be a result of them
- 5If the fault returns after these checks, have a workshop check the nodes in the CAN network that may be defective
Symptome, die Sie bemerken können4
- The accelerator pedal is ignored when braking
- Cruise control cannot be engaged
- Uneven idle
- The electronic throttle system warning lamp is on
Was der Fehler beeinflussen kann3
- The engine control module shuts itself off (bus-off) and stays off until the power supply is cut
- The throttle follows the accelerator pedal position, and engine speed is controlled by fuel cut-off
- Cruise control is switched off during the driving cycle in which the fault was detected
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.