VOLVO
ECM-P2A0023 - O2 Circuit Range / Performance (Bank 1, Sensor 1). General Signal Failures. Signal stuck low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
5 ModelleS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (6)
- Volvo S80 (2007–)2007–2009Nur Motor: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Nur Motor: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Alle Motoren außer: B6304T2
- Volvo XC70 (2008–)2008Alle Motoren außer: B6324S
- Volvo XC70 (2008–)2009Nur Motor: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Nur Motor: D5244T18, D5244T5
Was bedeutet der Fehlercode?
The code means that the oxygen sensor signal stays constantly low. The engine control module (ECM) calculates the sensor temperature from its internal resistance, and the code is set when the calculated value is incorrect. It is tested with the engine running.
Mögliche Ursachen
- Short circuit between the signal wires
- Internal fault in the ECM
Was Sie tun können
- 1Read the code with a diagnostic tool and check whether it is active or only stored
- 2Check the connectors at the oxygen sensor for contact resistance, looseness and oxidation
- 3Use a multimeter to check that the signal wires are not shorted to each other
- 4Look for chafed wiring at the oxygen sensor where the signal wires may have touched each other
- 5Have a workshop check the oxygen sensor and the engine control module, since an internal fault in the module is a possible cause
Symptome, die Sie bemerken können1
- No noticeable symptoms for the driver
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.