AutoCodes – Cadillac – C0187 Cadillac

C0187 Cadillac Code - Multi-Axis Acceleration Sensor Circuit

Quick Answer

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. Common causes include Faulty Multi-Axis Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module), Multi-Axis Acceleration Sensor harness is open or shorted, Multi-Axis Acceleration 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: C0187 Cadillac indicates Multi-Axis Acceleration Sensor Circuit.
Common causes: Common causes include Faulty Multi-Axis Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module), Multi-Axis Acceleration Sensor harness is open or shorted, Multi-Axis Acceleration 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.

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Code Popularity 2,219

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 28, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0187 Cadillac Description

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. The Multi-Axis Acceleration Sensor communicates via serial data with the Electronic Brake Control Module (EBCM). The Electronic Brake Control Module activates the stability control function depending on the Multi-Axis Acceleration Sensor input. The Inflatable Restraint Sensing and Diagnostic Module uses the Multi-Axis Acceleration Sensor to determine if the vehicle is in a rollover or near collision incident. The Diagnostic Trouble Code (DTC) will be set if the Multi-Axis Acceleration Sensor signal is out of the specified range.

OBDII Code C0187 Cadillac - Multi-Axis Acceleration Sensor Circuit - AutoCodes.com — C0187 Cadillac Code - Multi-Axis Acceleration Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0187 Cadillac?

Faulty Multi-Axis Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module)
Multi-Axis Acceleration Sensor harness is open or shorted
Multi-Axis Acceleration Sensor circuit poor electrical connection
Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C0187 Cadillac?

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 C0187 Cadillac 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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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 C0187 Cadillac Code

1. What does the OBDII code C0187 mean on a Cadillac?

C0187 indicates an issue with the Multi-Axis Acceleration Sensor Circuit, which monitors vehicle acceleration and tilt for stability and traction control systems.

2. What are common symptoms of the C0187 code in a Cadillac?

Symptoms may include the ABS or traction control warning light illuminated, reduced stability or traction control performance, and erratic handling in slippery conditions.

3. What causes the C0187 code in a Cadillac?

Causes can include a faulty multi-axis acceleration sensor, damaged wiring or connectors in the sensor circuit, or issues with the electronic control module (ECM).

4. How do I diagnose the C0187 code?

Start by scanning for other related codes, inspecting the wiring and connectors for damage or corrosion, and testing the multi-axis acceleration sensor for proper operation using a multimeter.

5. Can I drive my Cadillac with the C0187 code active?

While the vehicle may still be drivable, stability and traction control systems may not function properly, increasing the risk of loss of control in slippery conditions.

6. How is the C0187 code fixed on a Cadillac?

Repairs may involve replacing the multi-axis acceleration sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

7. What tools are needed to fix the C0187 code?

You may need an OBDII scanner, a multimeter for electrical testing, and basic hand tools for accessing and replacing components.

8. How much does it cost to repair the C0187 code on a Cadillac?

Repair costs can range from $100 to $500 or more, depending on whether the sensor, wiring, or ECM needs replacement and labor fees.

9. Can a weak battery cause the C0187 code?

Yes, low voltage from a weak or failing battery can disrupt sensor communication and trigger the C0187 code.

10. Does the C0187 code require reprogramming the ECM after repairs?

In some cases, reprogramming or recalibrating the ECM may be necessary after replacing the sensor or repairing the circuit to clear the code and restore proper function.