C0288 Code - EBCM Detects Sensor Supply Voltage Fluctuating
Quick Answer
The Electronic Brake Control Module (EBCM) supplies a reference voltage of 5 volts to the yaw rate sensor/lateral accelerometer and the master cylinder pressure sensor. Common causes include Faulty Master Cylinder Pressure Sensor, Faulty Yaw Rate Sensor/Lateral Accelerometer. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C0288 indicates EBCM Detects Sensor Supply Voltage Fluctuating.
- Common causes
- Common causes include Faulty Master Cylinder Pressure Sensor, Faulty Yaw Rate Sensor/Lateral Accelerometer.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C0288 Description
What are the Possible Causes of the DTC C0288?
- Faulty Master Cylinder Pressure Sensor
- Faulty Yaw Rate Sensor/Lateral Accelerometer
How to Fix the DTC C0288?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0288 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C0288 Buick — EBCM Detects Sensor Supply Voltage Fluctuating
- C0288 Cadillac — EBCM Detects Sensor Supply Voltage Fluctuating
- C0288 Chevrolet — EBCM Detects Sensor Supply Voltage Fluctuating
- C0288 GMC — EBCM Detects Sensor Supply Voltage Fluctuating
Frequently Asked Questions about C0288 Code
1. What does OBDII code C0288 mean?
C0288 indicates that the Electronic Brake Control Module (EBCM) has detected fluctuations in the sensor supply voltage, which may affect proper sensor operation.
2. What are the common symptoms of code C0288?
Symptoms may include an illuminated ABS warning light, loss of ABS functionality, reduced brake performance, or intermittent braking issues.
3. What causes code C0288?
Common causes include a faulty EBCM, damaged or corroded wiring, poor electrical connections, a failing wheel speed sensor, or issues with the vehicle's power supply.
4. Can a weak battery cause the C0288 code?
Yes, a weak or failing battery can cause voltage fluctuations that trigger the C0288 code.
5. How do I diagnose the C0288 code?
Start by inspecting the battery and charging system, check for damaged wiring or loose connections in the ABS system, and test the wheel speed sensors and EBCM for faults.
6. Is it safe to drive with the C0288 code?
While the vehicle may still be drivable, it is not recommended as ABS functionality could be impaired, increasing the risk of skidding or reduced braking control.
7. How can I fix the C0288 code?
Repairs may include replacing damaged wiring, cleaning corroded connections, replacing a faulty sensor or EBCM, or addressing issues in the power supply.
8. How much does it cost to repair the C0288 code?
Repair costs vary depending on the issue, but replacing a wheel speed sensor typically costs $150–$400, while an EBCM replacement can range from $500–$1,200.
9. Can a bad alternator cause the C0288 code?
Yes, a failing alternator can lead to inconsistent voltage supply, potentially triggering the C0288 code.
10. Do I need to clear the C0288 code after repairs?
Yes, after completing repairs, clear the code with an OBDII scan tool and test-drive the vehicle to ensure the issue is resolved.
Discuss the causes and fixes for C0288 OBDII Code
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