VOLVO
DCDC-P0C3D00 - DC/DC Converter Temperature Sensor "B" Circuit. General Failure Information. No sub type information
System
Unknown System / Manufacturer Specific
Volvo models this fault code applies to
Applies to the following models:
1 modelV60 (2011–)
Show models by year and engine (2)
What does this fault code mean?
The DC/DC converter control module has registered a fault in the circuit for temperature sensor B. The fault is generic and gives no further detail. The causes may be a faulty temperature sensor, a cooling system that is not working, or a break or short in the connections. Because the converter is part of the high voltage system, charging of the high voltage battery is affected.
Possible causes
- Faulty temperature sensor B in the DC/DC converter control module
- Faulty cooling system for the converter
- Break or short circuit in the connections
What you can do
- 1Switch the ignition off and on again, and see whether the code comes back
- 2Check that the cooling system has no leaks and that the coolant level is correct
- 3Have a workshop check the connections to temperature sensor B and the cooling system for breaks, contact resistance and oxidation
- 4Work on the converter's wiring or connections is for qualified high voltage personnel only. Do not attempt it yourself
Symptoms you may notice4
- Message and warning symbol in the display
- Charging of the high voltage battery is absent or reduced while driving
- The high voltage battery discharges or charges poorly
- Drive modes PURE, SAVE and AWD disengage automatically or cannot be selected
What the fault can affect2
- No charging of the high voltage battery
- Hybrid drive mode is forced
General guidance for car owners. Diagnosis on the car can point to a different cause.