VOLVO
ECM-B12A611 - Auxiliary Heater Water Pump. General Electrical Failures. Circuit short to ground
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
12 ModelleC30 (2007–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Modelle nach Baujahr und Motor anzeigen (26)
- Volvo C30 (2007–2013)2011–2013Nur Motor: D4162T
- Volvo S40 (2004–2013)2011–2012Nur Motor: D4162T
- Volvo S60 (2011–)2011–2012Nur Motor: D4162T
- Volvo S60 (2011–)2013Nur Motor: B5204T8, B5204T9, B5254T12, B5254T14, D4162T
- Volvo S60 (2011–)2014–2015Nur Motor: B5204T8, B5204T9, B5254T12, B5254T14, D4162T, D4204T5
- Volvo S80 (2007–)2012Nur Motor: D4162T
- Volvo S80 (2007–)2013Nur Motor: B5254T12, B5254T14, D4162T
- Volvo S80 (2007–)2014Nur Motor: B5254T12, B5254T14, D4162T, D4204T5
- Volvo S80 (2007–)2015Nur Motor: D4162T, D4204T5
- Volvo V40 (2013–)2013Alle Motoren außer: B4164T, B4164T3, D5204T4, D5204T6
- Volvo V40 (2013–)2014Nur Motor: B5204T8, B5204T9, B5254T12, B5254T14, D4162T
- Volvo V40 (2013–)2015Nur Motor: B5204T8, B5204T9, D4162T, D4204T14
- Volvo V40 Cross Country (2013–)2013–2014Alle Motoren außer: B4164T, D5204T4, D5204T6
- Volvo V40 Cross Country (2013–)2015Alle Motoren außer: B4164T, B4204T11, D5204T6
- Volvo V50 (2004–2013)2011–2012Nur Motor: D4162T
- Volvo V60 (2011–)2011–2012Nur Motor: D4162T
- Volvo V60 (2011–)2013Nur Motor: B5204T8, B5204T9, D4162T, D82PHEV
- Volvo V60 (2011–)2014Nur Motor: B5204T8, B5204T9, B5254T12, D4162T, D4204T5, D82PHEV
- Volvo V60 (2011–)2015Nur Motor: B5204T9, B5254T12, D4162T, D4204T5, D82PHEV, D87PHEV
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2012Nur Motor: D4162T
- Volvo V70 (2008–)2013Nur Motor: B5204T9, D4162T
- Volvo V70 (2008–)2014–2015Nur Motor: B5204T9, D4162T, D4204T5
- Volvo XC60 (2009–)2014Nur Motor: D4204T5
- Volvo XC60 (2009–)2015Nur Motor: B5204T9, B5254T12, B5254T14, D4204T5
- Volvo XC70 (2008–)2014–2015Nur Motor: D4204T5
Was bedeutet der Fehlercode?
The engine control module drives the coolant pump through a relay, which protects the pump from excessive current. The pump moves coolant from the engine to the climate unit while automatic start/stop is active. The code is set when the connection between the module and the coolant pump relay is short-circuited to ground.
Mögliche Ursachen
- Loose connection or oxidation in the connector
- Signal wire short-circuited to ground
- Open circuit in the signal ground wire
- Damaged coolant pump relay
- Damaged pump
- Short circuit or open circuit in the wiring to the pump
Was Sie tun können
- 1Check that the relevant fuses are intact and that the connectors at the coolant pump relay are fully seated and free from oxidation
- 2With a multimeter, check that the signal wire to the relay has no contact with ground (the body), with the connectors disconnected
- 3Also check that the electric water pump and its wiring are intact, since a pump that does not work can stop the fuel heater working
- 4If the connectors and wiring are sound, the relay or the pump is probably damaged; have a workshop replace the faulty part
Symptome, die Sie bemerken können4
- Uneven temperature in the cabin
- HYBRID drive mode is used all the time or too often, with the combustion engine running
- The parking heater does not work
- Text window with a warning symbol and text message
Was der Fehler beeinflussen kann3
- The coolant pump is switched off
- The coolant valves are kept open
- In cold outdoor weather the coolant pump keeps running
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.