Was bedeutet der Fehlercode ECM-P209728?

Diagnose und Fehlercodedefinition für ECM-P209728 (Volvo S60 (2011–), Volvo S60 (2011–), Volvo S80 (2007–)). Steuergerätereparatur bei OBD Tuning.

VOLVO

ECM-P209728 - Post Catalyst Fuel Trim System Too Rich Bank 1. General Signal Failures. Signal bias level out of range / zero adjustment failure

System

Motorsteuergerät (ECM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

6 Modelle

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–)

Modelle nach Baujahr und Motor anzeigen (11)

Was bedeutet der Fehlercode?

Although the code is named signal bias or zero adjustment failure, it applies when the oxygen sensor shows a mixture that is wrongly rich compared with what the engine control module (ECM) expects. The fault may come from a leak in the exhaust system or from a damaged oxygen sensor.

Mögliche Ursachen

Leakage in the exhaust system
Oxygen sensor indicates an incorrectly rich mixture
Damaged oxygen sensor

Was Sie tun können

1Check the wiring to the oxygen sensor for damage and chafing
2Check the exhaust system for leaks, since a leak can give a wrong signal
3If you have a diagnostic tool: read the oxygen sensor signal in live data with the engine running steadily and see whether it shows a rich mixture
4If the fault remains, have a workshop establish whether the engine control module has an internal fault and, if so, replace it

Symptome, die Sie bemerken können1

Check engine warning lamp lights or behaves abnormally

Was der Fehler beeinflussen kann2

Oxygen sensor control is switched off
Catalytic converter diagnostics are switched off

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.