U0419 Steering Effort Control Module Invalid Data
The U0419 code indicates that the Steering Effort Control Module is transmitting data that the receiving module considers invalid, corrupt, or outside expected parameters. This is detected via the CAN bus network per OBD-II and SAE J2012 standards. Typically, this fault does not cause a total loss of communication but rather an inconsistency in steering wheel load data integrity, which can affect the electronic power steering (EPS) system or steering feedback. The receiving module discards incoming data due to checksum failures, timeouts, or illogical values from the torque sensor.
1. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.
2. Most Common Causes
- Internal failure in the Steering Effort Control Module (EPS module)
- Short circuit, open circuit, or high resistance in the CAN bus wiring
- Malfunctioning torque sensor in the steering column
- Low battery voltage or power supply issues to the module
- Corroded connectors or bent pins in the steering module harness
- Electromagnetic interference (EMI) affecting communication signals
- Module software needing reprogramming or update
3. Symptoms You Will Notice
- Steering wheel feels heavy or inconsistent
- EPS warning light illuminated on dashboard
4. Step-by-Step Diagnosis
Scan for all codes and check freeze frame data
Inspect battery voltage and charging system
Check CAN bus wiring for shorts, opens, or high resistance
Examine torque sensor and steering module connectors for corrosion or damage
Test torque sensor signal with a scan tool or oscilloscope
Check for technical service bulletins (TSBs) regarding software updates
5. Frequently Asked Questions
Is it safe to drive?▼
You can usually drive short distances, but steering may feel abnormal. Have it diagnosed promptly to avoid safety issues.
How much does it cost to fix?▼
Repair costs range from $100 for a simple connector repair to $1,200 for module replacement, depending on the root cause.