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U0258 — Lost Communication Radio Transceiver

Generic OBD-II · all makesNetwork / communication

Code U0258 indicates that the vehicle's communication network has lost contact with the radio transceiver module. This is a network communication error where the module is no longer responding to requests or sending data on the CAN bus.

Symptoms

What causes it — most likely first

1. Wiring Faults

Damaged, frayed, or corroded communication wires between the transceiver and the network.

2. Power Supply Issue

A blown fuse or failed relay preventing the radio transceiver from powering on.

3. Failed Radio Transceiver

Internal hardware failure within the transceiver module itself.

4. Loose Connectors

Poor electrical contact at the module's connector due to vibration or corrosion.

5. Network Interference

Shorts in other modules on the same communication bus disrupting the signal.

6. Control Module Failure

A failure in the BCM or PCM that manages the network gateway.

How it's diagnosed

  1. Scan all modules for related U-codes to determine if the network failure is isolated or systemic.
  2. Inspect all fuses and fusible links associated with the radio and telematics system.
  3. Verify that the radio transceiver is receiving the correct operating voltage and ground.
  4. Inspect the wiring harness for physical damage, chafing, or signs of rodent intrusion.
  5. Perform a pin-out test on the communication lines to check for open circuits or shorts to ground.
  6. Test the transceiver module's response using a diagnostic tool to check for internal failure.

Code facts & related codes

SystemNetwork / communication
StandardizationSAE generic — identical on every make
Related codesU0250 — Lost Communication Impact ClassificatiU0251 — Lost Communication Running Board ContrU0252 — Lost Communication Lighting Control MoU0253 — Lost Communication Accessory Protocol U0254 — Lost Communication Remote Start ModuleU0255 — Lost Communication Front Display Inter

Frequently asked

Does this code affect the engine's performance?

No, U0258 is a communication code related to convenience and telematics; it does not typically impact the mechanical operation of the engine.

Should I replace the PCM to fix this code?

No, replacing the PCM is rarely the correct fix for U0258. The problem is almost always located in the transceiver module, its power supply, or the associated wiring.

Can a battery disconnect clear this code permanently?

A battery reset may clear the code temporarily, but if there is a wiring fault or hardware failure, the code will return as soon as the network fails again.