What it means
A receiving module has received implausible or invalid data from restraints system sensor I. The exact sensor and affected restraint functions depend on the vehicle.
At a glance
- Usually lights the warning light of the system that lost communication
How it works
Restraints system sensor I is a vehicle-specific satellite sensor that sends crash-related data to the restraint control system. This code sets when a receiving module gets data from sensor I that it considers invalid or implausible; the sensor's location and affected restraint functions vary by vehicle.
Common causes
Most likely first.
- Faulty restraints system sensor or its wiring/connector
- Poor sensor power or ground
- Restraints control module or network fault
Symptoms
- SRS/airbag warning light
- Related restraint functions may be disabled
How to diagnose it
- Record freeze-frame data and scan the restraint and other modules for companion codes to see when sensor I data became invalid and whether communication faults are also present.
- Use a restraint-capable scan tool to check sensor I status and compare its live data with other available crash sensors.
- With the vehicle's service information, locate sensor I and inspect its connector and accessible wiring for damage, corrosion, looseness, or water intrusion.
- Have a qualified technician check sensor I's power and ground, where applicable, and test its signal and network communication against the manufacturer's specifications.
- If wiring and sensor tests pass, check for restraint-module or network faults and verify software compatibility after any recent module replacement.
Common fixes
- Repair a loose, corroded, or damaged sensor I connector or wiring.
- Restore a poor sensor I power or ground connection if the vehicle's design uses them.
- Update or correctly configure a replacement restraint module when software incompatibility is confirmed.
- Replace sensor I if testing confirms it sends invalid data.
- Repair the restraint control module or network fault if diagnosis traces the invalid data to that source.
Can I keep driving?
The airbag warning light may mean some restraint protection is disabled, so do not assume airbags will operate normally in a crash. Arrange prompt diagnosis and avoid disturbing restraint wiring or connectors.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.