This code can happen after doing work on the electrical circuit that controls the SLU Solenoid. This includes the Nomad Lock-Up system, the GEN2 Lockup System and also the Nomad and Extreme Valve Body upgrades.
The code itself indicates that the TCU has detected a short or open circuit on the SLU Solenoid wiring.
If this has happened after the fitment of a Lock-Up kit, install a bypass connector to take the LCM out of the equation. If the DTC still sets after this, then the issue is most likely in the wiring or connectors of the Lock-Up kit.
If the DTC doesn't set with the Bypass installed, then the LCM module would need to be checked over.
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