What it means
A control module is not receiving expected messages from the Personal Computer. The affected functions depend on the vehicle's equipment; the code alone does not identify why communication was lost.
How it works
The Personal Computer is a named vehicle network node whose exact role depends on the vehicle's equipment. U0192 means the reporting module stopped receiving that node's expected messages; the cause may be the PC itself, gateway routing, or a network fault.
Common causes
Most likely first.
- PC unpowered or hung
- Gateway module routing CAN messages incorrectly
- CAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Functions relying on the Personal Computer may be unavailable
- Other communication codes
How to diagnose it
- Scan every module and capture freeze-frame data and related communication codes to see whether the Personal Computer alone is missing or several nodes have dropped out.
- Check battery condition and system voltage, then verify whether the Personal Computer powers up or appears hung.
- Inspect the PC's power, ground, and network connections and look for loose plugs, corrosion, or damaged wiring.
- Check the gateway's network status and message routing for the Personal Computer using vehicle-specific scan data.
- If the network is offline or unstable, test CAN wiring and termination at the specified test points against the manufacturer's specification before replacing a module.
Common fixes
- Restore power to the Personal Computer or perform the vehicle-specified reset if it is unresponsive.
- Repair loose, corroded, or damaged PC power, ground, or network connections.
- Correct a gateway configuration or routing fault identified by vehicle-specific diagnostics.
- Repair a CAN wiring or termination fault confirmed by measurement against the manufacturer's specification.
- Replace the Personal Computer only after its power, ground, network, and gateway routing have been verified.
Can I keep driving?
Driving impact depends on what the Personal Computer controls in that vehicle; the code alone does not indicate an engine or emissions fault. If warnings or failures involve essential vehicle controls, avoid driving until those functions are assessed.
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.