C2770 Mercury Code - Longitudinal Acceleration Sensor Plausibility 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
- C2770 Mercury indicates Longitudinal Acceleration Sensor Plausibility 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.
Code C2770 Mercury Description
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.
What are the Possible Causes of the DTC C2770 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 C2770 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 C2770 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.
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Frequently Asked Questions about C2770 Mercury Code
1. What does the OBDII code C2770 mean on a Mercury?
C2770 indicates a "Longitudinal Acceleration Sensor Plausibility Failure," meaning the sensor's data is inconsistent or implausible compared to other system inputs.
2. What are the symptoms of the C2770 code?
Common symptoms include ABS or traction control warning lights, stability control system deactivation, and potential loss of traction or stability assistance.
3. What causes the C2770 code to appear?
Possible causes include a faulty longitudinal acceleration sensor, damaged wiring or connectors, calibration issues, or a malfunction in the ABS control module.
4. Can I drive my Mercury with the C2770 code active?
While the vehicle may still be drivable, safety systems like ABS and traction control may be compromised, increasing the risk of loss of control in slippery conditions.
5. How is the C2770 code diagnosed?
A technician will use a scan tool to read the code, check sensor data for plausibility, inspect the wiring and connectors, and test the acceleration sensor and related circuits.
6. How do I fix the C2770 code?
Repairs may include replacing the longitudinal acceleration sensor, repairing or replacing damaged wiring, or recalibrating the system using specialized equipment.
7. Where is the longitudinal acceleration sensor located in a Mercury?
The sensor is typically mounted in the center of the vehicle, often under the center console or near the floorboard.
8. How much does it cost to repair the C2770 code on a Mercury?
Repair costs vary but typically range from $150 to $400, depending on whether the sensor, wiring, or control module needs replacement.
9. Can a weak battery cause the C2770 code?
Yes, a weak or failing battery can cause voltage irregularities that might trigger sensor-related fault codes, including C2770.
10. Do I need to recalibrate the system after repairing the C2770 code?
Yes, recalibration of the longitudinal acceleration sensor or ABS system may be necessary after repairs to ensure proper functionality.
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