VOLVO
DCDC-P0C3C00 - DC/DC Converter Temperature Sensor "A" Circuit Intermittent/Erratic. 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 that the signal from temperature sensor A is erratic, meaning the reading jumps around and is not stable. The fault is generic and gives no further detail on its type. The cooling system may be at fault, as may the temperature sensor in the control module. Charging of the high voltage battery is affected.
Possible causes
- Faulty temperature sensor in the DC/DC converter control module
- Faulty cooling system for the converter
What you can do
- 1Switch the ignition off, wait a moment and switch it on again, and check whether the warning goes out
- 2Check the cooling system for visible leaks and make sure the coolant level is correct
- 3Have a workshop check the temperature sensor and its circuit with diagnostic equipment, since erratic readings can come from poor contact
- 4Work on the converter's cooling or wiring is reserved for qualified high voltage personnel
Symptoms you may notice4
- Warning symbol and message in the display
- Charging of the high voltage battery is uneven or absent while driving
- The high voltage battery discharges or charges poorly
- Drive modes PURE, SAVE and AWD disengage automatically or are not available
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.