OBD-II trouble code
U0419: Invalid Data Received From Steering Effort Control Module
A module is receiving messages from the steering effort control module, but the data inside them is implausible or out of range. This module tunes power-steering assist. The connection is alive — the content is wrong.
Quick facts
- System
- Network
- Category
- Network Communication
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $100 – $900
- DIY difficulty
- Shop recommended
What does U0419 mean?
The steering effort control module governs how much power-steering assist you get — varying the effort at the wheel with vehicle speed (light and easy for parking, firmer and more stable at highway speed) and, on some vehicles, with a selectable steering-feel or drive mode. It works closely with the electric power steering system and reports its status and commanded assist over the network. U0419 sets when a receiving module is still hearing from the steering effort control module, but the data in its messages is invalid: a value is out of range, implausible, or contradicts what other modules see. The link is alive; the content can't be trusted — which is the key difference from a lost-communication code like U0130, where the module has gone completely silent.
Because the fault is bad data rather than a dead connection, the causes lean toward whatever makes the module broadcast wrong information. A failing input — a steering-angle or torque signal it depends on, or a vehicle-speed reading — can push the module into reporting values other modules reject. Low system voltage is a classic trigger, since module logic and steering-assist calculations both get unreliable as voltage sags. The module's software can be at fault if it's outdated, corrupted, or was never programmed after a replacement, and electrical noise or damaged bus wiring can corrupt otherwise-good messages. Because steering-effort tuning is tightly linked to the steering-angle sensor, a fault or a missing calibration there frequently shows up as invalid steering-effort data.
Symptoms follow which data is invalid. Steering assist may default to a fixed level — often heavier than normal, since a safe fallback errs toward more effort rather than less — or the variable-effort/drive-mode feature may stop working. You may see a power steering or general warning light. Steering does not disappear; electric power steering fails toward manual-assist effort rather than no steering, so the vehicle stays driveable, just harder to turn at low speed. U0419 is frequently a secondary code, so read the full list, because a companion steering-angle, torque-sensor, or power-steering code often names the real root cause.
Common causes
- Failing steering-angle or steering-torque sensor feeding the module bad data
- Vehicle-speed signal fault producing implausible values the module relies on
- Low system voltage or a weak battery/charging system
- Steering-angle sensor not calibrated after an alignment, suspension, or steering repair
- Outdated, corrupted, or mismatched steering effort control module software
- Module replaced without proper programming
- Electrical noise or damaged bus wiring corrupting messages in transit
- Steering effort control module internal fault
Symptoms
- Steering assist stuck at a fixed level, often heavier than normal
- Variable-effort or drive-mode steering feel no longer changing with speed
- Power steering or general warning light illuminated
- Steering that feels heavy at low speed / parking
- Companion steering-angle, torque-sensor, or power-steering codes stored alongside U0419
- Stability control warnings, since steering data feeds those systems
- Vehicle still driveable — steering remains, just with altered effort
Diagnostic steps
- 1.Read ALL stored codes first — U0419 is often secondary to a steering-angle, torque-sensor, or power-steering code that names the bad signal.
- 2.Check battery and charging system voltage; low voltage is a common cause of implausible module data and erratic assist.
- 3.Use live data to compare the module's reported steering angle, torque, and speed inputs against actual conditions.
- 4.Confirm the steering-angle sensor is calibrated — a missing calibration after alignment or steering work is a frequent trigger.
- 5.Inspect the module's connectors and wiring for corrosion or damage.
- 6.Verify the module has the correct, current software, especially after any recent replacement, then address companion codes before condemning it.
Repair cost
$100 – $900
Cost depends on what's producing the bad data. A steering-angle sensor calibration or relearn is often $75-$200. A steering-angle or torque sensor replacement typically runs $200-$500 including diagnosis. Correcting low voltage or a charging fault is $150-$600. A module reflash is usually $100-$300, and module replacement with programming $300-$900 — but that should only follow thorough diagnosis, since U0419 is frequently a secondary code.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with steering angle sensor service preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
Leave this one to a qualified shop. It typically involves emissions-critical components, refrigerant handling, or other work that requires manufacturer-grade tooling, training, or certification. DIY attempts often produce a more expensive problem than the original code.