Error code
OBD2 P0644
OBD2P0644
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Driver Display Serial Communication Circuit.
Severity
moderateCan drive, but may experience display errors or other communication problems.
Summary
P0644 indicates an issue with the driver display's serial communication circuit, which is part of the wiring or CAN data bus system.
Common Causes
- Wiring issues
- CAN data bus malfunction
- ECM (Engine Control Module) failure
Fixes
FAQ
What does P0644 mean?
P0644 indicates a malfunction in the driver display's serial communication circuit, which can affect how information is displayed and communicated within the vehicle.
How do I fix P0644?
Fixing P0644 typically involves diagnosing issues with wiring or the CAN data bus. Professional diagnosis may be necessary to identify and repair the specific problem.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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