VOLVO
SRS-0158 - Passenger seat belt buckle. Signal too low. Intermittent fault
System
Supplemental Restraint System (SRS)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS40 (1996–2004), V40 (1996–2004)
Show models by year and engine (2)
What does this fault code mean?
Although the code name refers to a low signal, it applies when the signal from the buckle is too high. The fault is intermittent, so it may not be present right now.
Possible causes
- A broken wire, or contact resistance at the connector between the buckle and the control module
- Short to supply voltage in the buckle wiring
- Faulty seat belt buckle
What you can do
- 1Have a workshop visually check the connector at the passenger seat belt buckle and the connector to the SRS control module for loose, oxidised or corroded contacts
- 2Have a workshop examine the wiring between the buckle and the SRS control module for chafing and crush damage
- 3Clear the code and see if it comes back
- 4If it comes back, have a workshop check the wiring and the buckle with diagnostic equipment
- 5Do not work on the airbag system yourself; have a workshop check it
Symptoms you may notice1
- The SRS warning lamp is on
General guidance for car owners. Diagnosis on the car can point to a different cause.