What it means
A receiving module detected implausible data from the navigation control module. Position, route or guidance data fails plausibility checks and is rejected.
How it works
The receiving module checks position, route, and guidance messages from the navigation control module. U0464 sets when those navigation values fail plausibility checks and are rejected, potentially disrupting route guidance or position-based features.
Common causes
Most likely first.
- Module internal fault or sensor input drift
- Software version mismatch after replacement
- Gateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan all modules and save freeze-frame data to identify which module logged U0464 and whether navigation, positioning, or communication codes are present.
- Review live position, route, and guidance data from the navigation control module and compare the displayed position with the vehicle's actual location.
- Inspect the navigation control module's connectors and wiring, including accessible positioning-system connections, for damage, loose terminals, or water intrusion.
- Check whether the fault began after a navigation module replacement or software update, then verify its configuration and software compatibility.
- If navigation values remain implausible, check CAN communication and gateway routing, then test the control module and its inputs using the manufacturer's diagnostic procedure.
Common fixes
- Repair loose or damaged navigation control module connectors or wiring.
- Correct a navigation module configuration or software mismatch after replacement or an update.
- Repair a faulty positioning input or its circuit if testing confirms the cause.
- Repair CAN or gateway routing faults that affect position, route, or guidance messages.
- Replace the navigation control module if its internal fault is confirmed.
Can I keep driving?
This fault usually affects navigation guidance or position-based features, not basic steering or braking. Ignore route instructions that do not match your location and use another navigation method until the data is reliable.
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.