Your Volvo Xc70 engine control system detects a problem, the computer stores the diagnostic trouble
code C1939 in its memory.
To figure out what is wrong with your vehicle you must first extract the C1939 DTC For Volvo Xc70.
C1939 Volvo Xc70 engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)
C1939 Volvo Xc70 DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
MFG - Manufacturer Specific
Low Coolant Circuit
A/C System High Pressure High Temperature
The C1939 Volvo Xc70 Check Engine lamp is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C1939 diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks C1939 DTC For Volvo Xc70 with your car's computers to find out exactly what's prompting the light to turn on.