Lost Communication With Side Restraints Control Module - Left
What it means
U0152 means the vehicle has lost communication with the left side-restraints control module — part of the airbag (SRS) system that manages the left-side and curtain airbags. When it goes offline, the SRS warning light comes on and those airbags may not deploy in a crash. The car drives normally, but occupant protection is compromised, so this should be diagnosed promptly. The cause is usually a wiring, connector, power/ground, or bus fault.
Can I keep driving? The car drives normally, but the airbag warning light will be on and the left-side airbags may not deploy in a crash — get it inspected promptly for safety.
Common symptoms
What you'll notice
- Airbag/SRS warning light on
- Left side-airbag or curtain function disabled
- SRS or restraints fault message
- Scan tool can't reach the left side-restraints module
Common causes
Most likely first
- Wiring or connector fault at the module (often under the seat or in the B-pillar)Likely
- Power or ground problem to the moduleCommon
- Failed side-restraints control moduleCommon
- CAN/restraints bus wiring faultLess often
How to diagnose & fix
Work through it in order
- Scan the restraints system for related codes — SRS work carries deployment risk, so disconnect the battery and wait per the service manual first.
- Inspect the module connector and wiring, commonly under the seat or in the pillar.
- Check the module's power and ground.
- Verify bus communication to the module.
- Have SRS repairs done by a qualified tech; replace and program the module if confirmed faulty.
FAQ
Quick answers
Is it safe to drive with U0152?+
Can I just clear U0152?+
Related codes
Often seen with U0152
Read & clear U0152 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.