VOLVO
ECM-0138 - Rear heated oxygen sensor (HO2S), bank 1.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:
3 ModelleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (13)
- Volvo C30 (2007–2013)2007–2009Nur Motor: B4184S11, B4184S8, B4204S3
- Volvo C30 (2007–2013)2010Nur Motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo C30 (2007–2013)2011–2013Nur Motor: B4204S3, B4204S4
- Volvo S40 (2004–2013)2005Nur Motor: B4184S11
- Volvo S40 (2004–2013)2006Nur Motor: B4184S11, B4184S8
- Volvo S40 (2004–2013)2007–2009Nur Motor: B4184S11, B4184S8, B4204S3
- Volvo S40 (2004–2013)2010Nur Motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo S40 (2004–2013)2011–2012Nur Motor: B4204S3, B4204S4
- Volvo V50 (2004–2013)2005Nur Motor: B4184S11
- Volvo V50 (2004–2013)2006Nur Motor: B4184S11, B4184S8
- Volvo V50 (2004–2013)2007–2009Nur Motor: B4184S11, B4184S8, B4204S3
- Volvo V50 (2004–2013)2010Nur Motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo V50 (2004–2013)2011–2012Nur Motor: B4204S3, B4204S4
Was bedeutet der Fehlercode?
The engine control module has registered that the voltage from the rear lambda sensor on bank 1 has stayed above a set value for a set time, and treats this as a fault. The rear sensor, located after the catalytic converter, sends a signal to the control module, and the fault concerns that signal. It is usually caused by a signal wire shorted to voltage or by a damaged sensor.
Mögliche Ursachen
- Signal wire shorted to supply voltage
- Damaged rear lambda sensor, bank 1
Was Sie tun können
- 1Read, clear the code and road test to see whether it returns
- 2Check that the connector at the rear lambda sensor is fully engaged and free from corrosion
- 3Follow the cable from the sensor and look for chafing, pinched sections and places where the insulation has melted
- 4With the ignition on and the connector unplugged, use a multimeter to check that the signal wire has no voltage. Voltage there means the wire is shorted to supply
- 5If you have a diagnostic tool, check in live data whether the rear sensor value stays constantly high even when the engine is warm and the throttle is released
- 6If the fault returns, have a workshop with diagnostic equipment check the wiring before the sensor is replaced
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) lit
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.