U0153
Lost Communication with Restraints Control Module B
The Restraints Control Module B has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. A second restraints controller is unreachable, affecting airbag readiness. Safety-critical. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
The Restraints Control Module B has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. A second restraints controller is unreachable, affecting airbag readiness. Safety-critical. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Common causes
- high
Secondary SRS module unpowered
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-1980
- medium
CAN wiring to secondary SRS broken
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-1980
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does U0153 mean?
U0153 means "Lost Communication with Restraints Control Module B". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0153?
secondary srs module unpowered; can wiring to secondary srs broken; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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