What it means
The control module monitors its operating temperature. It sets this code when the variable effort steering module reports a temperature above its limit.
At a glance
- Usually lights the ABS or stability-control warning light
- The engine or gearbox may go into limp mode
How it works
The variable-effort steering module monitors its own operating temperature to protect the system. This code sets when the reported temperature exceeds the module's allowed limit, potentially because of heat buildup, excess electrical load, or a temperature-sensing fault.
Common causes
Most likely first.
- Module overheating from prolonged high electrical load
- Poor heat dissipation or restricted cooling
- Excessive current from an actuator or circuit fault
- Temperature sensing circuit fault
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
How to diagnose it
- Record freeze-frame data and review related steering and electrical codes to see whether overheating followed heavy system use or a circuit fault.
- Check the module's reported temperature and supply voltage with a scan tool, comparing readings with the manufacturer's diagnostic information.
- Inspect the module area for blocked airflow, heat exposure, contamination, or damage that could restrict heat dissipation.
- Check actuator and steering circuits for signs of excessive current or binding using the manufacturer's procedure.
- Inspect the temperature-sensing circuit and connector for damage, poor contact, or implausible readings.
- If cooling, wiring, and loads check out, test the module and temperature sensing internally before replacement.
Common fixes
- Remove any obstruction or correct the condition restricting module heat dissipation.
- Repair damaged connectors or wiring in the temperature-sensing circuit.
- Correct an actuator or circuit fault causing excessive electrical load.
- Replace the module if its temperature reading or internal operation fails the specified tests.
Can I keep driving?
The system may limit or disable steering-related stability assistance, and brake assist may be reduced. Avoid strenuous or prolonged driving until the fault is checked, and stop if steering or braking changes.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.