Lateral acceleration sensor internally faulty or contaminated; Damaged or corroded wiring harness or connector at the sensor; Sensor mounting bracket loose or disturbed, changing its zero reference; Low or uneven tire pressures causing the vehicle to corner differently than the sensor expects; Wheel alignment or suspension wear altering the vehicle's actual yaw versus measured lateral acceleration; Failed calibration or zero-point memory in the stability control module; Stability control module internal fault or corrupted software

DTC codes / C04xx · Brakes, steering and suspension / C0499

C0499Lateral Acceleration Sensor Range/Performance

Q: What does code C0499 mean?

Lateral Acceleration Sensor Range/Performance. C0499 means the vehicle's stability control module has detected that the lateral acceleration sensor is producing a signal outside its expected range or behaving erratically during a self-test or while driving. The sensor measures side-to-side cornering force, and the module compares that signal against other motion sensors to confirm the vehicle is responding as expected.

C0499 means the vehicle's stability control module has detected that the lateral acceleration sensor is producing a signal outside its expected range or behaving erratically during a self-test or while driving. The sensor measures side-to-side cornering force, and the module compares that signal against other motion sensors to confirm the vehicle is responding as expected.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Traction control or stability control warning light illuminated on the dashboard
Anti-lock brake system (ABS) warning light on, often because stability control shares the same module
Stability control system disabled, with a message such as 'Service StabiliTrak' or 'VDC Off'
Unexpected brake intervention or throttle reduction during normal cornering
Often no symptoms besides the warning light, with the vehicle driving normally
Cruise control refusing to engage on some vehicles because stability control is unavailable

Common causes, most likely first

Lateral acceleration sensor internally faulty or contaminated
Damaged or corroded wiring harness or connector at the sensor
Sensor mounting bracket loose or disturbed, changing its zero reference
Low or uneven tire pressures causing the vehicle to corner differently than the sensor expects
Wheel alignment or suspension wear altering the vehicle's actual yaw versus measured lateral acceleration
Failed calibration or zero-point memory in the stability control module
Stability control module internal fault or corrupted software

How to diagnose and fix it

Check all four tire pressures and adjust to the door-jamb specification, then clear the code and road test
Inspect the lateral acceleration sensor connector and wiring for corrosion, chafing, or loose pins
Verify the sensor is mounted securely and has not been disturbed or replaced without calibration
Use a scan tool to read live lateral acceleration data while cornering and compare it with expected values
Perform the manufacturer's zero-point calibration procedure for the lateral acceleration sensor
Check wheel alignment and inspect suspension components for wear that would skew the sensor reading
If the sensor signal remains out of range after wiring and calibration checks, replace the lateral acceleration sensor and recalibrate

Why this code often is not the sensor

A loose sensor bracket or a sensor that was removed during suspension work without recalibration is a very common cause of C0499 that gets missed because the sensor itself tests fine.
Uneven tire pressures or a mismatched tire size can make the vehicle corner differently enough that the stability module flags the lateral acceleration signal as implausible.
The lateral acceleration sensor is frequently combined with the yaw rate sensor in one unit, so a yaw rate code may accompany C0499 even though the root fault is shared hardware.
Some vehicles require a steering angle sensor calibration after battery replacement or alignment, and a skipped calibration can trigger C0499 indirectly.
A stability control module that has lost its calibration memory may set C0499 without any physical sensor fault, so calibration should be attempted before parts replacement.

Can I keep driving with C0499?

You can usually drive the vehicle, but stability control and sometimes anti-lock braking assistance will be reduced or disabled, so avoid aggressive cornering, towing, or slippery conditions until the fault is repaired. If the brake pedal feels abnormal or the ABS light is also on, have the vehicle inspected promptly.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.