C0191 Chevrolet Code - Longitudinal Accelerometer Signal Voltage
Quick Answer
The ignition 1 circuit supplies 12 volts to the longitudinal accelerometer. Common causes include Faulty Yaw Sensor/Lateral Accelerometer Sensor, Yaw Sensor/Lateral Accelerometer Sensor harness is open or shorted, Yaw Sensor/Lateral Accelerometer Sensor circuit poor electrical connection. 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
- C0191 Chevrolet indicates Longitudinal Accelerometer Signal Voltage.
- Common causes
- Common causes include Faulty Yaw Sensor/Lateral Accelerometer Sensor, Yaw Sensor/Lateral Accelerometer Sensor harness is open or shorted, Yaw Sensor/Lateral Accelerometer Sensor circuit poor electrical connection.
- 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 C0191 Chevrolet Description
What are the Possible Causes of the DTC C0191 Chevrolet?
- Faulty Yaw Sensor/Lateral Accelerometer Sensor
- Yaw Sensor/Lateral Accelerometer Sensor harness is open or shorted
- Yaw Sensor/Lateral Accelerometer Sensor circuit poor electrical connection
How to Fix the DTC C0191 Chevrolet?
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 C0191 Chevrolet 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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Frequently Asked Questions about C0191 Chevrolet Code
1. What does the OBDII code C0191 mean on a Chevrolet?
C0191 indicates an issue with the longitudinal accelerometer signal voltage, which is responsible for measuring acceleration or deceleration forces in the vehicle.
2. What are the common symptoms of the C0191 code?
Symptoms may include the ABS or traction control light illuminating, reduced braking performance, or erratic ABS or stability control system behavior.
3. What causes the C0191 code to appear on a Chevrolet?
Common causes include a faulty longitudinal accelerometer sensor, damaged wiring or connectors, or issues with the ABS control module.
4. Can I drive my Chevrolet with the C0191 code?
While the vehicle may still be drivable, safety systems like ABS and traction control might not function properly, increasing the risk of accidents in slippery or emergency conditions.
5. How do I diagnose the C0191 code on my Chevrolet?
Diagnosis involves using a scan tool to confirm the code, inspecting the accelerometer sensor and its wiring for damage, and testing the voltage signals to ensure proper operation.
6. How do I fix the C0191 code on a Chevrolet?
Repairs may include replacing the faulty longitudinal accelerometer sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ABS control module if necessary.
7. Where is the longitudinal accelerometer sensor located on a Chevrolet?
The sensor is typically located near the center of the vehicle, often under the center console or beneath the driver's seat, depending on the model.
8. Can a weak battery cause the C0191 code?
Yes, a weak or failing battery can sometimes cause voltage-related issues that trigger the C0191 code, although it's less common.
9. How much does it cost to fix the C0191 code on a Chevrolet?
Repair costs can range from $100 to $500 or more, depending on whether the issue is a simple wiring repair or requires sensor or module replacement.
10. Will clearing the C0191 code with a scan tool fix the problem?
Clearing the code will only temporarily remove it; the underlying issue must be repaired to prevent the code from returning.
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