U2146
Lost Communication With Shift Lever Module
U2146 is an OBD-II diagnostic trouble code meaning: Lost Communication With Shift Lever Module. Common causes: open or short circuit in the module power supply circuit, damage to the wiring harness to the selector module. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- The gearbox operates in emergency mode
- Unable to change gears
- The display does not show the current selector position
- Loss of power or engine speed limitation
Causes
- Open or short circuit in the module power supply circuit
- Damage to the wiring harness to the selector module
- Malfunction of the gear selector module itself
- Problems with the CAN bus
- Corrosion of contacts or connectors
How to Fix
- Check the fuses associated with the selector module
- Inspect the wiring harness and connectors for damage.
- Check the supply voltage on the module
- Scan the CAN bus for errors
- If necessary, replace the gear selector module
Related codes
FAQ
What does the U2146 code mean?
U2146 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Shift Lever Module
What causes a U2146 error code?
The most common causes of U2146 include: Open or short circuit in the module power supply circuit; Damage to the wiring harness to the selector module; Malfunction of the gear selector module itself; Problems with the CAN bus.
How do I fix a U2146 diagnostic trouble code?
To fix U2146: Check the fuses associated with the selector module. Inspect the wiring harness and connectors for damage.. Check the supply voltage on the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U2146?
Limited driving only, diagnose soon
How much does it cost to fix U2146?
The estimated repair cost for U2146 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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