Faulty or failing navigation control module; Corroded, loose, or damaged CAN bus wiring at the navigation module connector; Software corruption or outdated firmware in the navigation module; Poor ground connection for the navigation module; Voltage supply issues to the navigation module (low battery or charging system fault); Aftermarket accessories wired into the CAN bus or navigation circuit; Water intrusion or physical damage to the navigation module or its harness

DTC codes / U05xx · Network communication / U0588

U0588Invalid Data Received from Navigation Control Module

Q: What does code U0588 mean?

Invalid Data Received from Navigation Control Module. U0588 is a network communication code indicating that a control module received invalid or corrupted data from the navigation control module over the vehicle's controller area network (CAN) bus. The computer detected a message from the navigation module that failed its internal data integrity checks, such as a checksum error or out-of-range value, so the receiving module flagged the data as untrustworthy.

U0588 is a network communication code indicating that a control module received invalid or corrupted data from the navigation control module over the vehicle's controller area network (CAN) bus. The computer detected a message from the navigation module that failed its internal data integrity checks, such as a checksum error or out-of-range value, so the receiving module flagged the data as untrustworthy.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaNetwork communication

Symptoms you may notice

Navigation screen may freeze, reboot, or display incorrect vehicle position
Radio or infotainment system may lose audio or show a blank screen
Steering wheel controls for audio or phone may become unresponsive
Driver information center may show a 'navigation system fault' message
Often no symptoms besides the warning light if the invalid data is intermittent
Other modules may log communication codes if the navigation module disrupts the bus

Common causes, most likely first

Faulty or failing navigation control module
Corroded, loose, or damaged CAN bus wiring at the navigation module connector
Software corruption or outdated firmware in the navigation module
Poor ground connection for the navigation module
Voltage supply issues to the navigation module (low battery or charging system fault)
Aftermarket accessories wired into the CAN bus or navigation circuit
Water intrusion or physical damage to the navigation module or its harness

How to diagnose and fix it

Verify battery voltage and charging system output; low voltage can cause spurious network errors
Inspect the navigation module connector and CAN bus wiring for corrosion, looseness, or damage
Check and clean the navigation module ground connection
Use a scan tool to clear the code and test-drive to see if it returns
Perform a software update or reflash of the navigation module if a manufacturer update is available
Substitute a known-good navigation module or use a CAN bus analyzer to confirm the module is sending invalid data
Replace the navigation control module and perform any required configuration or programming

What the navigation module really sends

The navigation module shares position and time data with other systems, so invalid data can cause unrelated modules to log codes or behave oddly.
A weak battery or failing alternator often triggers U0588 because the navigation module drops offline or sends corrupted frames during voltage sags.
Aftermarket radio or camera installations that tap into the CAN bus are a frequent cause of invalid data codes that owners overlook.
The code does not always mean the navigation module is dead; a single corrupted frame from a loose connector can set it intermittently.
Some vehicles require the navigation module to be configured or learned after replacement, or the code will reset immediately.

Can I keep driving with U0588?

The vehicle remains safe to drive because the fault affects infotainment and navigation data rather than engine, steering, or braking controls. Avoid relying on the navigation display for directions, and address the issue promptly if other modules begin logging communication codes.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.