VOLVO
ECM-950C - Accelerator pedal (AP) position sensor. 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:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (8)
- Volvo C30 (2007–2013)2007–2011Nur Motor: B5244S4
- Volvo C70 (2006–2013)2006Alle Motoren außer: B5254T3
- Volvo C70 (2006–2013)2007–2010Nur Motor: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Nur Motor: B5244S4
- Volvo S40 (2004–2013)2004Nur Motor: B5244S4, B5244S5
- Volvo S40 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S5, B5244S7
- Volvo V50 (2004–2013)2004Nur Motor: B5244S4, B5244S5
- Volvo V50 (2004–2013)2005–2010Nur Motor: B5244S4, B5244S5, B5244S7
Was bedeutet der Fehlercode?
The ECM compares the PWM signal, which runs directly to it, with the analog signal that comes via the central electronic module (CEM) and CAN. The code is stored when the ECM detects a fault in either signal from the accelerator pedal sensor. If one signal is faulty, the other is used.
Mögliche Ursachen
- Fault in the central electronic module (CEM), where fault tracing starts
- PWM signal cable shorted to voltage or ground, or broken
- Loose connections or contact resistance in the PWM or analog signal terminals
- Damaged accelerator pedal position sensor
- Fault in the voltage supply or ground to the accelerator pedal sensor
- Fault in the CAN communication between the ECM and the CEM
Was Sie tun können
- 1Read the fault codes in the CEM first and deal with them. This code cannot be cleared until the CEM code has been remedied and cleared
- 2Check the accelerator pedal sensor and ECM connectors for play, contact resistance and oxidation
- 3If you have a diagnostic tool: activate the read-out of the accelerator signals with the ignition on, and compare the values with the pedal untouched and pressed down
- 4Use a multimeter to check the PWM signal cable, and the supply and ground to the analog signal, for breaks and shorts
- 5If the fault remains, have a workshop with diagnostic equipment decide whether the accelerator pedal sensor needs replacing. Accelerator input is ignored when braking, so do not keep driving with the fault
Symptome, die Sie bemerken können4
- Poor accelerator pedal response
- Accelerator pedal ignored when braking
- Message in the information display
- Vehicle's maximum speed limited
Was der Fehler beeinflussen kann3
- The accelerator pedal signal is filtered when accelerating
- Accelerator input is ignored when braking
- If one signal fails, the other signal is used
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.