What it means
A receiving module detected implausible data from the localization and mapping module (HD map / SLAM ECU). Position or map-attribute values fail plausibility checks and are rejected.
How it works
The localization and mapping module combines vehicle position information with high-definition map data and shares its position and map attributes with other systems. This code sets when a receiving module finds those values implausible and rejects them, which can affect functions that depend on accurate location or map context.
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 rejected localization and mapping data and whether related position or ADAS faults are present.
- Check which location-dependent functions are unavailable and note whether the fault appears in a particular area or after a recent map or module change.
- Check the module's scan-tool status for position or map-data validity and compare it with the vehicle's reported location and operating conditions.
- Inspect the localization and mapping module's connectors and accessible wiring for looseness, damage, or corrosion.
- Check for related CAN or gateway faults that could disrupt position or map messages between modules.
- If the module or map software was recently updated or replaced, verify the software version and vehicle configuration.
Common fixes
- Repair loose, damaged, or corroded module wiring and connectors.
- Correct gateway routing or network configuration if position or map messages are being misrouted.
- Update or configure the module or map data to the vehicle's required version.
- Replace the localization and mapping module if its position or map output remains implausible and an internal fault is confirmed.
Can I keep driving?
The vehicle may remain drivable, but location-dependent driver assistance or navigation functions may be limited. Do not rely on map-based prompts or assistance to judge road conditions, lane position, or turns.
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.