VOLVO
PHM-5529 - Internal backup antenna Invalid signal
System
Phone Module (PHM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (4)
What does this fault code mean?
Although the code is named internal backup antenna, it applies to the internal GPS antenna. The carphone control module (PHM) weighs the main antenna signal against the internal GPS antenna signal, and the code is set when neither is stronger than the other. The fault comes from a damaged internal GPS antenna, and the mobile phone gets poor reception.
Possible causes
- Damaged internal GPS antenna
What you can do
- 1Read and note the code before clearing it, so the workshop can see it
- 2Road test the car and check whether the telephone reception is poor
- 3Have a workshop check the internal antenna and replace the carphone control module (PHM) if the fault remains
Symptoms you may notice4
- Poor reception or coverage on the mobile phone
- Other mobile phone problems
- Other Volvo On Call problems
- A text message appears together with a warning symbol
General guidance for car owners. Diagnosis on the car can point to a different cause.