What it means
A receiving module detected implausible data from gear shift control module B. Shift-by-wire request or position values fail plausibility checks and are rejected.
How it works
Gear shift control module B supplies shift-by-wire request or position information to other vehicle modules. U0592 sets when a receiving module judges data from module B implausible and rejects it, which can affect gear selection or confirmation.
Common causes
Most likely first.
- Module internal fault or sensor input drift
- Software version mismatch after replacement
- Gateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan all modules and save freeze-frame, transmission, and communication codes to identify the reporting module and the conditions when U0592 appeared.
- Check the battery and charging system, since low or unstable supply voltage can make shift-module data unreliable.
- Inspect gear shift control module B connectors and wiring, including areas disturbed by recent repairs, for corrosion, damage, or loose connections.
- With a scan tool, compare module B’s requested gear and reported gear position with the selector position and transmission data.
- Check gateway and network faults, then test the module’s power, ground, and communication circuits to the manufacturer’s specification.
- If module B or another network module was replaced or programmed, verify its software and vehicle configuration before replacing parts.
Common fixes
- Repair damaged or poorly connected wiring at gear shift control module B.
- Resolve a weak battery or charging fault affecting module operation.
- Correct an installation, configuration, or software mismatch after module replacement.
- Repair or replace the gear shift control module B if tests confirm it is producing implausible data.
- Repair a gateway or network fault if testing shows shift data is being routed incorrectly.
Can I keep driving?
If gear selection is delayed, uncertain, or unavailable, do not continue driving; park safely and have the vehicle recovered if it cannot reliably select or hold a gear. Even without obvious symptoms, avoid unnecessary trips because rejected shift data can lead to unexpected loss of drive or limited operation.
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.