U0592

Code

Generic U — Network/User

Invalid Data Received From Gear Shift Control Module B

Brand: Generic

Type: U — Network/User

Views: UK: 25 EN: 49 RU: 34

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Faulty Gear Shift Control Module B (hardware or firmware)
Intermittent or poor electrical connection at the module (corroded/loose connector pins)
Damaged wiring harness (open, short to ground or battery, chafed wires)
CAN/LIN bus fault (shorted/high resistance, missing/incorrect termination)
Low battery voltage or charging system problems causing data corruption
Incompatible or incorrect module programming/software mismatch

Symptoms

Malfunction indicator lamp (MIL) or message on instrument cluster
Erratic shifting or transmission enters limp/limited-gear mode
Gear position indicator shows incorrect gear or “—”
Inability to shift or delayed shifting
Intermittent loss of transmission control functions
Other network-related warnings or multiple U-codes present

What to check

Use a scan tool: read all active/pending U-codes and related freeze-frame data
Check battery voltage (engine off and cranking) and charging system
Visually inspect connectors and wiring at Gear Shift Control Module B and related junctions
Inspect CAN/LIN bus for damage, splices, or aftermarket taps
Measure CAN_H/CAN_L idle voltages (~2.5 V each) and bus differential
Measure termination resistance across CAN_H to CAN_L (~60 ohms total) with power off

Signal parameters

Gear position / selector position (expected valid range and update rate)
Shift request and confirmation messages (commands and acknowledgements)
Solenoid status/command messages
Module heartbeat / alive message frequency
CAN ID(s) or PGN(s) used by Gear Shift Control Module B
Bus voltage levels: CAN_H, CAN_L, and differential voltage

Diagnostic algorithm

Capture current and pending codes plus freeze-frame and note occurrence conditions.
Clear codes and perform a test drive or functional test to see if code returns.
Inspect power, ground, and connectors at Gear Shift Control Module B for corrosion, tightness, and correct seals.
With ignition on, check module supply voltage and ground continuity. Repair any power/ground issues.
Check CAN/LIN bus voltages at the module: each line ~2.5 V at idle and differential ~0 V (stationary), no shorts to battery/ground.
Measure termination resistance between CAN_H and CAN_L with power off (~60 ohms). Investigate if out of range.
Wiggle-test the harness while monitoring live data and scan tool for communication dropouts to find intermittent wiring faults.
Inspect and repair any damaged wiring, pin corrosion, or poor splices. Replace connectors or harness sections as needed.
If wiring and power/ground check good and bus integrity verified, check for software updates or known module reflash procedures; reprogram module if required.
If problem persists, swap in a known-good Gear Shift Control Module B (or bench test/repair) to confirm module fault before replacement.
After repairs, clear codes and verify proper operation and that the code does not return.

Likely causes

Connector corrosion or bent pins at Gear Shift Control Module B
Broken or rubbed through CAN low/high wire near harness flex points
Faulty ground or fused power feed to the gear shift module
Failed internal module components or corrupted firmware
Aftermarket device or recent module replacement not programmed correctly

Fault status

⚠️ Status

Invalid or corrupt data received from Gear Shift Control Module B over the vehicle communication network. Check module communications, wiring, power/ground, and software.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.5 hours