VOLVO
TCM-P0B0A68 - Electromagnetic Oil Pump "EMOP" Supply Voltage Circuit Low. Algorithm Based Failures. Event information
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2014–2015Transmission TG-81SC only
- Volvo S80 (2007–)2014–2015Transmission TG-81SC only
- Volvo V40 (2013–)2015Transmission TG-81SC only
- Volvo V40 Cross Country (2013–)2015Transmission TG-81SC, TG-81SC AWD only
- Volvo V60 (2011–)2014–2015Transmission TG-81SC only
- Volvo V60 Cross Country (2015–)2015Transmission TG-81SC only
- Volvo V70 (2008–)2014–2015Transmission TG-81SC only
- Volvo XC60 (2009–)2014–2015Transmission TG-81SC only
- Volvo XC70 (2008–)2014–2015Transmission TG-81SC only
What does this fault code mean?
This fault code is event controlled and does not point to a fault inside the control module; it is designed as information. It shows that the voltage to the electromagnetic oil pump (EMOP) in the transmission has been too low. The pump ensures the right pressure and flow when automatic engine start/stop is active.
Possible causes
- Voltage too low in the system
- Contact resistance, oxidation or a loose connection in the connector
- The connector or cable is damaged
- Damaged system relay
- A battery charger giving the wrong voltage was connected
- Damaged battery or damaged generator
What you can do
- 1The code is informative and does not indicate a fault in the control module, so it does not need to be repaired in itself. Read and note it if you wish
- 2Check that the battery is in good condition and that no charger giving the wrong voltage has been connected
- 3Check that the battery terminals are tight and free from oxidation, and that cables and connectors are undamaged
- 4Have a workshop check the generator and the system relay if the voltage remains too low
Symptoms you may notice2
- Automatic engine start/stop does not work while driving
- Automatic engine start/stop does not work at idle
What the fault can affect1
- The function for automatic engine start/stop is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.