U0619

Lost Communication With Steering Angle Sensor Module

U0619 is a generic OBD-II network diagnostic trouble code: Lost Communication With Steering Angle Sensor Module. It is logged by the engine control unit when the network monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
U0619
Group
Network
System
Network
Severity
Warning (MIL on)
Need U0619 disabled?
RaceTune permanently disables any OBD-II trouble code on supported ECUs — for motorsport, off-road, and export use.
→

What U0619 means

DTC U0619 is set when the primary control module (typically the ABS/ESC module or BCM) cannot establish or maintain serial communications with the Steering Angle Sensor (SAS) module over the CAN bus network. The SAS module provides real-time steering wheel position data required by stability control, adaptive cruise, and lane-keeping systems.

The fault is triggered after a defined number of consecutive missing or corrupted CAN frames from the SAS node address. The module may be genuinely absent from the bus, powered off, or the network segment may be disrupted by wiring faults. Related stability and traction control systems will typically be disabled while this fault is active.

Diagnosis should begin with network topology verification using a scan tool capable of reading all module communication status, followed by physical inspection of the CAN bus wiring at the SAS connector and any intermediate splices or junction blocks on the same CAN network segment.

Common causes

Most-frequently reported root causes when U0619 is logged.

  • 1
    Open or short circuit in the CAN High or CAN Low wire between the SAS module and the network gateway.
  • 2
    Corroded, spread, or damaged terminals at the SAS module harness connector.
  • 3
    Failed or internally damaged Steering Angle Sensor module.
  • 4
    Blown fuse or lost ignition/battery supply to the SAS module.
  • 5
    Incorrect CAN bus termination resistance caused by a damaged terminating resistor.
  • 6
    Water intrusion into the SAS module or its connector.
  • 7
    Software fault or corrupted calibration inside the SAS module requiring reprogramming.

Symptoms drivers notice

Stability control (ESC/VSC/DSC) warning light illuminated on the instrument cluster.
Traction control system disabled or operating in a degraded mode.
MIL or separate network warning lamp may illuminate.
Steering angle sensor calibration lost, requiring re-zeroing after repair.
Adaptive cruise control or lane-keep assist may be unavailable.

How to diagnose U0619

A typical diagnostic flow when this code is present.

  1. 1
    Connect a scan tool and retrieve all stored DTCs from every module to map the full scope of network communication faults.
  2. 2
    Check live CAN bus data to determine whether the SAS module is visible on the network.
  3. 3
    Verify battery voltage and check the fuse supplying ignition power to the SAS module.
  4. 4
    Inspect the SAS harness connector and wiring for corrosion, spread pins, chafing, or moisture damage.
  5. 5
    Measure CAN bus resistance across the network (should be approximately 60 ohms with both terminators in place) to rule out wiring faults.
  6. 6
    Substitute or retest the SAS module if power, ground, and network wiring all check out.
  7. 7
    Recalibrate the steering angle sensor to zero after completing any repair.

Related network codes

Frequently asked questions

Can I drive with U0619 active?

Short distances at low speed may be acceptable, but stability and traction control will be disabled, significantly increasing accident risk in emergency maneuvers. Repair as soon as possible.

Will clearing the code fix the problem?

Clearing U0619 without repairing the root cause will result in the code returning as soon as the module attempts to communicate with the SAS node again.

Does U0619 require steering angle sensor replacement?

Not necessarily. The most common causes are wiring and connector faults. Confirm power, ground, and CAN bus integrity before condemning the module.

Why do other ESC and ABS codes appear alongside U0619?

Stability control relies on steering angle data; when that input is lost the ESC module sets secondary faults reflecting missing sensor data, not additional hardware failures.

Disabling U0619 in software

RaceTune can permanently disable U0619 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

Got U0619 in your scan?

Upload your ECU file — we'll identify the exact software version and confirm whether a disable is available for your car.

Upload your file