Code U0062 indicates that the voltage on communication bus D is higher than the expected operating range. This condition prevents the electronic modules on this specific network from exchanging data, often resulting in the loss of functionality for affected systems.
A short circuit in the communication bus wiring causing the signal line to be pulled to a higher voltage than normal.
Moisture or corrosion within a connector causing electrical bridging or signal interference on the bus.
An individual module connected to Bus D has suffered an internal failure, causing it to hold the communication line high.
Physical damage, such as chafing or rubbing against a sharp edge, leading to a short between the bus line and a power wire.
An internal failure within the primary network controlling module, though this is significantly less common than wiring faults.
Usually not. U0062 is typically caused by wiring shorts or a failure in a peripheral module; the PCM is rarely the cause and should only be replaced after all wiring and other modules have been ruled out.
While low voltage can cause general communication errors, a 'Bus High' code specifically indicates a voltage level above the normal range, which is more often associated with a short circuit than a dying battery.
It depends on which systems are linked to Bus D. While the engine may run, critical safety or stability systems may be disabled, so the vehicle should be inspected immediately.