Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Land Rover Defender 110FACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Index DTC: Power Steering Control Module (PSCM) -- Defender/L663
- Diagnostic Trouble Code Index - DTC: Power Steering Control Module (PSCM) (G2400908)
- Description And Operation
- Power Steering Control Module (PSCM)
- Notes
- DTC B1304-04: Electronic Power Assisted Steering System - System internal failures
- DTC B1304-16: Electronic Power Assisted Steering System - Circuit voltage below threshold
- DTC B1304-17: Electronic Power Assisted Steering System - Circuit voltage above threshold
- DTC B1304-98: Electronic Power Assisted Steering System - Component or system over temperature
- DTC C102D-07: High Friction Inside Power Steering - Mechanical failures
- DTC C1B00-62: Steering Angle Sensor - Signal compare failure
- DTC C200B-01: Steering Shaft Torque Sensor 1 - General electrical failure
- DTC C200B-31: Steering Shaft Torque Sensor 1 - No signal
- DTC U0046-81: Vehicle Communication Bus C - Invalid serial data received
- DTC U0046-82: Vehicle Communication Bus C - Alive/sequence counter incorrect/not updated
- DTC U0046-87: Vehicle Communication Bus C - Missing message
- DTC U0080-81: Vehicle Communication Bus F - Invalid serial data received
- DTC U0080-82: Vehicle Communication Bus F - Alive/sequence counter incorrect/not updated
- DTC U0080-87: Vehicle Communication Bus F - Missing message
- DTC U1A4C-53: Build/End of Line mode Active - Deactivated
- DTC U2100-56: Initial Configuration Not Complete - Invalid/incomplete configuration
- DTC U2300-55: Central Configuration - Not configured
- DTC U3000-47: Control Module - Watchdog/safety ΞΌC failure
- Power Steering Control Module (PSCM)
- Description And Operation
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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