Vehicle Communication Bus D (-) Open
What it means
U0060 means the negative wire of vehicle communication bus D is open — an electrical break in the data network. Modules on that bus can no longer trade data, so features go dead and warning lights appear. The impact depends on which systems ride bus D: a comfort bus just loses features, while a powertrain bus can cause a hard start or no-start. It is almost always a wiring or connector fault rather than a failed module.
Can I keep driving? Depends on the network — an open on bus D can range from a few disabled features to a no-start if it carries the powertrain, so diagnose before relying on the car.
Common symptoms
What you'll notice
- Several warning lights on together
- Modules on bus D missing or not responding to a scan tool
- Features served by bus D stop working
- Possible hard start or no-start if bus D serves the engine or transmission
Common causes
Most likely first
- Open or broken wire on the bus D negative circuitLikely
- Corroded, backed-out, or disconnected connector pinCommon
- Damaged wiring from chafing, rodents, or a prior repairCommon
- Failed module leaving the circuit open internallyLess often
- Water intrusion corroding a splice or terminalLess often
How to diagnose & fix
Work through it in order
- Identify which modules use bus D and check which have dropped off to map the open circuit.
- Inspect the bus D negative wiring end to end for breaks, chafing, and damaged connectors.
- Measure continuity on the (-) circuit to locate the open.
- Reseat connectors and repair corroded or backed-out terminals.
- Repair the broken wire or replace the failed module, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with U0060?+
Can I just clear U0060?+
Related codes
Often seen with U0060
Read & clear U0060 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.