VOLVO
CEM-5A13 - Blower fan motor. Voltage too high
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (11)
- Volvo C30 (2007–2013)2007–2010
- Volvo C30 (2007–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
- Volvo C30 (2007–2013)2013Engine B4204S3, B4204S4, B5254T7 only
- Volvo C30 Electric (2011–2013)2011–2013
- Volvo C70 (2006–2013)2006–2010
- Volvo C70 (2006–2013)2011Engine B5244S4, B5254T7 only
- Volvo C70 (2006–2013)2012–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2004–2010
- Volvo S40 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
- Volvo V50 (2004–2013)2004–2010
- Volvo V50 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
What does this fault code mean?
The central electronic module (CEM) has registered that the voltage to the blower fan motor is too high, and the fault code is stored when this happens. The fan stops when the voltage gets too high, so the fault shows as a fan that does not work. The fault is checked by running the fan.
Possible causes
- Supply voltage to the fan motor is too high
- Fault in the voltage supply to the fan
What you can do
- 1Read and note the code, clear it and run the fan to see whether the fault returns
- 2Check that the fan wheel turns freely and that nothing is blocking it
- 3If you have a diagnostic tool, read the voltage to the fan motor in live data while the fan runs, and check that it stays steady
- 4Check that the fan connectors are secure and free from corrosion
- 5Remedy what is found, and have a workshop replace the fan motor if the fault remains
Symptoms you may notice2
- Blower fan does not work
- Air flow problem
What the fault can affect1
- The blower fan motor does not start
General guidance for car owners. Diagnosis on the car can point to a different cause.