Event Data Recorder Request Circuit/Open
The Event Data Recorder (EDR / black box) request line — used by the ECM or restraint module to trigger the EDR to capture pre-crash data — is open. The ECM cannot trigger an event capture, so any subsequent crash event would not be recorded reliably.
Affected components
- Event data recorder
- Request wire
Common causes
- High likelihood: Open request wire or unplugged module
- Medium likelihood: Failed input stage in the EDR
- Low likelihood: Pin pushed back out of connector body
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.