OBD-II trouble code
U0153: Lost Communication With Side Restraints Control Module (Right)
The airbag system has stopped receiving messages from the right side restraints control module. Because this module manages the passenger-side side and curtain airbags, treat it as safety-critical and diagnose it promptly.
Quick facts
- System
- Network
- Category
- Network Communication
- Severity
- High severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $100 – $1,200
- DIY difficulty
- Shop recommended
What does U0153 mean?
Many vehicles split the airbag system into a central restraints control module plus dedicated side (satellite) modules that handle the left and right side-impact and curtain airbags. U0153 is a lost-communication code: the network — usually the main restraints module — has stopped receiving messages from the right side restraints control module. That module gathers passenger-side side-impact input and helps decide when to fire the passenger-side thorax and curtain airbags and pretensioner. When it goes silent on the bus, U0153 is stored. This differs from an 'invalid data' fault (its U04xx counterpart), where the module still talks but sends implausible values; here it has effectively dropped off the network.
Because this is passive-safety equipment, a communication loss is treated seriously: the system commonly disables deployment on that side as a fail-safe and turns on the airbag/SRS warning light, meaning a passenger-side side or curtain airbag may not fire in a crash. Common causes are power or ground loss to the module, damaged or corroded bus wiring and connectors — side modules mount low in the pillar, rocker, or seat base where moisture and spills reach them — a connector disturbed during seat or collision work, an internally failed module, or a wider bus fault. This is not a DIY code: airbag circuits can deploy accidentally if mishandled, so it should be diagnosed by a technician with the correct scan tool and service data.
Common causes
- Loss of power or ground to the right side restraints control module
- Damaged, corroded, or loose bus wiring or connectors
- Moisture or liquid intrusion at the low pillar/rocker/seat-base module location
- Connector disturbed or not reseated after seat or collision repair
- Internally failed right side restraints control module
- A wider communication (bus) fault affecting the restraints network
Symptoms
- Airbag/SRS warning light on, often with a service-airbag message
- Passenger-side side and/or curtain airbag deployment disabled as a fail-safe
- Companion restraints or lost-communication codes stored alongside U0153
- Intermittent setting over rough roads (connector/wiring related)
- Vehicle otherwise starts and drives normally, masking the loss of protection
Diagnostic steps
- 1.Scan the restraints/SRS module and all modules with a tool that can access the airbag system; record every code. Follow safe SRS procedure — disconnect the battery and wait the specified time before handling airbag circuits.
- 2.Confirm whether the right side module or a nearby component was recently serviced.
- 3.Verify the module's power and ground feeds.
- 4.Inspect the module's connectors and its pillar/rocker/seat-base location for moisture, corrosion, and loose pins.
- 5.Check bus wiring to the module for damage, especially along seat and door harness routes.
- 6.If power, ground, and wiring are good but the module stays offline, replace/program it per factory procedure, or refer to a qualified technician.
Repair cost
$100 – $1,200
A wiring, connector, or ground repair is often $150-$450. Correcting moisture damage varies with access. Right side restraints module replacement with programming is the expensive case at roughly $350-$1,000. Because this is a safety system, prioritize a correct diagnosis over the cheapest fix, and have airbag work done safely.
Estimate your repair
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Open the Repair Cost Estimator with control module replacement & programming preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
Leave this one to a qualified shop. It typically involves emissions-critical components, refrigerant handling, or other work that requires manufacturer-grade tooling, training, or certification. DIY attempts often produce a more expensive problem than the original code.