What it means
The control module monitors variable effort steering system operation. It sets this code when the module detects a performance fault in that system.
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 control module manages operation of the system and checks whether its performance is within expected limits. This code sets when the module detects a system performance problem, which may result from its own fault, software, or an out-of-range supply voltage.
Common causes
Most likely first.
- Module internal fault
- Module software outdated, reflash may resolve
- Supply voltage outside specification
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 scan all steering, ABS, and stability modules for companion codes before clearing anything.
- Check battery and charging-system voltage against the manufacturer's specification, including for unstable supply or poor grounds.
- Inspect module power, ground, connectors, and harness for corrosion, damage, or loose connections.
- Review live system data and available module status information for abnormal operation or repeated resets.
- Check whether applicable module software updates or configuration corrections are specified for the vehicle.
- If voltage, wiring, and software are verified, follow the manufacturer's module performance test before replacing the module.
Common fixes
- Correct a weak battery, charging fault, or poor module ground.
- Repair loose, corroded, or damaged module wiring and connectors.
- Apply the specified module software update or configuration.
- Replace and configure the control module if its internal performance fault is confirmed.
Can I keep driving?
Steering-related stability assistance may be limited, and brake assist may be reduced. Drive cautiously only if steering and braking remain normal, and stop if either feels abnormal.
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.