Failed lateral accelerometer or yaw rate sensor, the most common cause on high-mileage vehicles; Corroded, chafed, or open wiring in the sensor circuit, particularly at connectors exposed to road splash; Poor ground connection for the sensor or the stability control module; Low or unstable reference voltage supplied by the stability control module to the sensor; Water intrusion into the sensor connector or housing, causing intermittent voltage swings; Failed stability control module, though this is less common than sensor or wiring faults; Aftermarket accessories or recent body repairs that disturbed the sensor mounting or harness

DTC codes / C05xx · Brakes, steering and suspension / C0555

C0555Lateral Accelerometer Voltage Out of Range

Q: What does code C0555 mean?

Lateral Accelerometer Voltage Out of Range. The lateral accelerometer, also called the yaw rate sensor on many vehicles, measures how hard the car is cornering and sends a voltage signal to the stability control module. Code C0555 sets when that voltage falls outside the range the module expects for the current driving conditions, indicating a faulty sensor, wiring problem, or module reference voltage issue.

The lateral accelerometer, also called the yaw rate sensor on many vehicles, measures how hard the car is cornering and sends a voltage signal to the stability control module. Code C0555 sets when that voltage falls outside the range the module expects for the current driving conditions, indicating a faulty sensor, wiring problem, or module reference voltage issue.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Traction control and stability control warning lights illuminated on the dashboard
Anti-lock brake system (ABS) light on in some vehicles because stability control shares the ABS module
Stability control system disabled, with a message such as 'ESC OFF' or 'Service StabiliTrak' displayed
No noticeable change in braking or handling during normal driving, especially at low speeds
Occasional activation of the stability control system without actual loss of traction
Cruise control may become inoperative on vehicles that disable it when stability control faults are present

Common causes, most likely first

Failed lateral accelerometer or yaw rate sensor, the most common cause on high-mileage vehicles
Corroded, chafed, or open wiring in the sensor circuit, particularly at connectors exposed to road splash
Poor ground connection for the sensor or the stability control module
Low or unstable reference voltage supplied by the stability control module to the sensor
Water intrusion into the sensor connector or housing, causing intermittent voltage swings
Failed stability control module, though this is less common than sensor or wiring faults
Aftermarket accessories or recent body repairs that disturbed the sensor mounting or harness

How to diagnose and fix it

Scan all modules for stored and pending codes, then record freeze-frame data to see the conditions when C0555 set
Inspect the lateral accelerometer connector and harness for corrosion, water intrusion, and chafed wires
Measure reference voltage, ground, and signal voltage at the sensor connector with a digital multimeter and compare to manufacturer specifications
Check the sensor mounting for looseness or damage and verify it is correctly oriented and free of debris
Perform a wiggle test on the harness while watching live sensor data to catch intermittent faults
Replace the lateral accelerometer if voltage readings are out of specification with good wiring and power supply
Clear codes and perform any required calibration or zero-point reset of the stability control system after repair

What the lateral accelerometer code hides

A loose or corroded ground for the stability control module can set C0555 even when the sensor itself tests perfectly, so always verify grounds before condemning the sensor.
Many vehicles require a scan-tool calibration or zero-point reset after sensor replacement, and skipping it will set the code again immediately.
Low tire pressure or mismatched tire sizes can cause the stability control module to flag sensor plausibility faults, so check tire condition before deeper diagnostics.
The lateral accelerometer is often mounted under the center console or a seat, where spilled drinks and floor water can corrode connectors that look fine from above.
A failing wheel speed sensor or steering angle sensor can trigger stability control faults that mimic a lateral accelerometer problem, so review all related codes before replacing parts.

Can I keep driving with C0555?

The vehicle remains safe to drive in normal conditions because the stability control system is disabled, but avoid aggressive cornering, towing, or slippery roads where electronic stability control would normally intervene. Repair the fault promptly to restore full safety system function.

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.