AutoCodes – Mercury – C2777 Mercury

C2777 Mercury Code - Sensor Cluster Bus Failure

Quick Answer

The yaw rate sensor, roll rate sensor, lateral accelerometer and longitudinal accelerometer are contained in one module called the stability control sensor cluster. Common causes include Faulty Stability Control Sensor Cluster, Stability Control Sensor Cluster harness is open or shorted, Stability Control Sensor Cluster 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
C2777 Mercury indicates Sensor Cluster Bus Failure.
Common causes
Common causes include Faulty Stability Control Sensor Cluster, Stability Control Sensor Cluster harness is open or shorted, Stability Control Sensor Cluster 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.
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Code Popularity 1,151
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code C2777 Mercury Description

The yaw rate sensor, roll rate sensor, lateral accelerometer and longitudinal accelerometer are contained in one module called the stability control sensor cluster. The sensor cluster measures the vehicle acceleration, roll rate and yaw rate, then sends the signal through a secondary, dedicated controller area network (CAN2) bus to the ABS module. The ABS module compares the information from the sensor cluster to information it receives from other sensors (brake pedal input or steering wheel rotation sensor) to determine how valid the information is and to determine if a roll-over event is about to occur.
The ABS module provides power to the sensor cluster and ground. The sensor cluster and the ABS module communicate. An open circuit or a short to power or ground on any one of these 4 circuits will cause the ABS module to set a DTC. Also, if the sensor cluster is not mounted in the correct position, with the electrical connector facing the passenger seat, the ABS module will also set DTCs.
OBDII Code C2777 Mercury - Sensor Cluster Bus Failure - AutoCodes.com
C2777 Mercury Code - Sensor Cluster Bus Failure

What are the Possible Causes of the DTC C2777 Mercury?

  • Faulty Stability Control Sensor Cluster
  • Stability Control Sensor Cluster harness is open or shorted
  • Stability Control Sensor Cluster circuit poor electrical connection

How to Fix the DTC C2777 Mercury?

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 C2777 Mercury 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.

Need more information about the C2777 Mercury code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C2777 Mercury Code

1. What are the common symptoms of OBDII code C2777 Mercury Sensor Cluster Bus Failure?

The common symptoms include malfunctioning gauges and warning lights on the instrument cluster, erratic behavior of the cluster display, and communication issues with other vehicle systems.

2. What are the possible causes of OBDII code C2777 Mercury Sensor Cluster Bus Failure?

Possible causes include faulty instrument cluster module, wiring or connection issues, damaged bus circuits, or problems with the vehicle's main computer system.

3. How can I diagnose OBDII code C2777 Mercury Sensor Cluster Bus Failure?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting wiring and connections related to the instrument cluster, and performing tests to determine the root cause of the communication failure.

4. Can I continue driving my vehicle with OBDII code C2777 Mercury Sensor Cluster Bus Failure?

It is not recommended to continue driving the vehicle with this code present, as it can lead to inaccurate instrument readings and potential safety hazards due to communication failures with critical vehicle systems.

5. How can I repair OBDII code C2777 Mercury Sensor Cluster Bus Failure?

Repair methods may vary depending on the exact cause of the issue, but common solutions include repairing or replacing the instrument cluster module, fixing wiring or connection problems, or reprogramming the vehicle's computer system.

6. Will resetting the OBDII code C2777 Mercury Sensor Cluster Bus Failure make it go away permanently?

Simply resetting the code may not permanently resolve the issue if the underlying cause is not addressed. It is important to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

7. Is OBDII code C2777 Mercury Sensor Cluster Bus Failure a serious problem?

While the severity of the issue may vary, it is important to address this code promptly to ensure the proper functioning of the instrument cluster and other vehicle systems that rely on its communication.

8. Can a DIY enthusiast fix OBDII code C2777 Mercury Sensor Cluster Bus Failure?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue. However, complex electrical problems may require professional assistance.

9. Are there any preventative maintenance steps to avoid OBDII code C2777 Mercury Sensor Cluster Bus Failure?

Regularly checking the instrument cluster for any abnormal behavior, addressing wiring or connection issues promptly, and ensuring proper maintenance of the vehicle's electrical system can help prevent this code from occurring.

10. How much does it typically cost to repair OBDII code C2777 Mercury Sensor Cluster Bus Failure?

The cost of repairs can vary based on the exact cause of the issue, labor rates in your area, and whether new parts are needed. It is recommended to obtain quotes from reputable mechanics or service centers for an accurate estimate.

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