VOLVO
SRS-DD01 - Communication control module. Signal too high / signal too low
System
Supplemental Restraint System (SRS)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
The airbag control module has a communication fault with the passenger weight sensor, and the signal reads either too high or too low. The fault is caused by the signal cable short-circuiting to supply voltage or ground. While the fault is present, the passenger airbag is deactivated.
Possible causes
- The LIN signal cable or its connectors have short-circuited to supply voltage or ground
What you can do
- 1Erase the code with a diagnostic tool, switch the ignition off for a while and on again, and see whether it returns
- 2Have a workshop check the signal cable and connectors for short-circuits to supply voltage and to ground
- 3If no fault is found, have a workshop replace the airbag control module, and then the pressure sensor and module of the passenger weight sensor if the fault remains
- 4After part replacement the airbag system must be configured and the passenger weight sensor calibrated; this is workshop work
- 5Do not work on the airbag system yourself; have a workshop carry out all checks and replacements
Symptoms you may notice2
- SRS warning light on
- PAD lamp on
What the fault can affect1
- Passenger airbag is deactivated
General guidance for car owners. Diagnosis on the car can point to a different cause.