AutoCodes – Generic – P16C6

P16C6 Code - Engine Mount Actuator High Voltage During Function Test

Quick Answer

The engine mount control system controls the engine mounts electronically. Common causes include Faulty Engine Mount Actuator, Engine Mount Actuator harness is open or shorted, Engine Mount Actuator 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: P16C6 indicates Engine Mount Actuator High Voltage During Function Test.
Common causes: Common causes include Faulty Engine Mount Actuator, Engine Mount Actuator harness is open or shorted, Engine Mount Actuator 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 12,559

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 Jan 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16C6 Description

The engine mount control system controls the engine mounts electronically. The system consists of the engine mount actuators, the engine mount control unit, and the Powertrain Control Module (PCM). The engine mount control unit uses the crankshaft and camshaft position sensor outputs (received from the PCM) to estimate engine vibration. The engine mount control unit then sends signals to the engine mount actuators to command the engine mounts to push and pull on the engine to counteract engine vibration. The engine mount control unit monitors the engine mount control unit voltage. If the ACM RLY OUT voltage is set value or less for a set time, the engine mount control unit detects a malfunction and stores a DTC.

OBDII Code P16C6 - Engine Mount Actuator High Voltage During Function Test - AutoCodes.com — P16C6 Code - Engine Mount Actuator High Voltage During Function Test

What does this mean?

What are the Possible Causes of the DTC P16C6?

Faulty Engine Mount Actuator
Engine Mount Actuator harness is open or shorted
Engine Mount Actuator circuit poor electrical connection
Faulty Engine Mount Control Unit

How to Fix the DTC P16C6?

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 P16C6 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 P16C6 code?

Need more information on how to fix the P16C6 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16C6 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16C6 Acura — Engine Mount Actuator High Voltage During Function Test
P16C6 BMW — CAN Interface Timeout
P16C6 Honda — Engine Mount Actuator High Voltage During Function Test
P16C6 MINI — CAN Interface Timeout

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 P16C6 Code

1. What does the OBDII code P16C6 mean?

P16C6 indicates that the Engine Control Module (ECM) has detected a high voltage condition in the engine mount actuator circuit during a function test.

2. What are the symptoms of a P16C6 code?

Common symptoms include increased engine vibrations, poor ride comfort, a check engine light, and possibly reduced engine performance.

3. What causes the P16C6 code to appear?

The code can be caused by a faulty engine mount actuator, damaged wiring or connectors, a short circuit, or a malfunctioning ECM.

4. Can I drive my car with a P16C6 code?

While the car may still be drivable, ignoring the code can lead to increased wear on engine components and a less comfortable ride due to excessive vibrations.

5. How do I diagnose the P16C6 code?

Start by inspecting the wiring and connectors to the engine mount actuator for damage. Use a multimeter to test for proper voltage and continuity in the circuit.

6. What tools are needed to troubleshoot a P16C6 code?

Youâ€™ll need a diagnostic scan tool, a multimeter, and possibly a service manual for your specific vehicle.

7. How is the P16C6 code fixed?

Repairs may involve replacing the engine mount actuator, repairing damaged wiring, or in rare cases, reprogramming or replacing the ECM.

8. How much does it cost to fix a P16C6 code?

Costs can vary depending on the issue, but replacing an engine mount actuator typically costs between $200 and $600, including parts and labor.

9. Can a faulty battery cause the P16C6 code?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code.

10. How do I prevent the P16C6 code from recurring?

Regularly inspect and maintain engine mounts and electrical connections, and address any engine vibration issues promptly to prevent further damage.

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