Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting a signal from a sensor that measures how fast the car is speeding up or slowing down, and the signal is too high.
The C0554 code is triggered when the vehicle's control module detects a high voltage signal from the longitudinal acceleration sensor.
The longitudinal acceleration sensor is part of the vehicle's stability control system, which helps maintain control during acceleration and braking. If the sensor's circuit sends a voltage signal that is higher than expected, it can indicate a problem with the sensor itself, the wiring, or the control module.
• Stability control warning light illuminated
• ABS warning light on
• Reduced vehicle stability during acceleration or braking
• Faulty longitudinal acceleration sensor
• Damaged or corroded wiring or connectors
• Faulty control module
Longitudinal Acceleration: The rate of change of velocity along the vehicle's length.
Control Module: A device that controls one or more of the vehicle's electronic systems.
• Use an OBD-II scanner to confirm the C0554 code.
• Inspect the longitudinal acceleration sensor and its wiring for damage.
• Check the sensor's voltage output with a multimeter.
• Replace the longitudinal acceleration sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Chevrolet Tahoe
• GMC Yukon
• Cadillac Escalade
• Regularly inspect sensor connections for corrosion.
• Keep the vehicle's undercarriage clean to prevent damage.
• Schedule regular maintenance checks.
Sensor Issue
• If the stability control light is on, drive cautiously.
• Have the vehicle inspected by a professional as soon as possible.
Check with the manufacturer for warranty coverage on electronic components.
This code has been associated with stability control issues in various GM vehicles over the years.
Moderate – The vehicle may still be drivable, but stability control functions may be compromised.
Driving with a compromised stability control system can increase the risk of losing control in adverse conditions.
• Vehicle on a flat surface
• Ignition in the 'on' position
The longitudinal acceleration sensor is typically located near the center of the vehicle, often under the center console or in the trunk area.
Q: Can I drive my car with a C0554 code?
A: You can drive the car, but be cautious as the stability control system may not function properly.
Q: How do I reset the C0554 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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