Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.
NOTICE
To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the meter/gauge system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
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Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU determines that the vehicle is being driven at a steep
bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily
disabled.
It is not a malfunction if the system and sensor circuits are normal ...