AutoCodes – Generic – P16C7

P16C7 Code - Rear Engine Mount Actuator Control Circuit High Current

Quick Answer

The engine mount control system controls the engine mounts electronically. Common causes include Faulty Rear Engine Mount Actuator, Rear Engine Mount Actuator harness is open or shorted, Rear 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: P16C7 indicates Rear Engine Mount Actuator Control Circuit High Current.
Common causes: Common causes include Faulty Rear Engine Mount Actuator, Rear Engine Mount Actuator harness is open or shorted, Rear 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 15,457

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 P16C7 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 P16C7 - Rear Engine Mount Actuator Control Circuit High Current - AutoCodes.com — P16C7 Code - Rear Engine Mount Actuator Control Circuit High Current

What does this mean?

What are the Possible Causes of the DTC P16C7?

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

How to Fix the DTC P16C7?

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 P16C7 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 P16C7 code?

Need more information on how to fix the P16C7 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16C7 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16C7 Acura — Rear Engine Mount Actuator Control Circuit High Current
P16C7 Honda — Rear Engine Mount Actuator Control Circuit High Current

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 P16C7 Code

1. What are the common symptoms of OBDII code P16C7 (Rear Engine Mount Actuator Control Circuit High Current)?

- Common symptoms include rough engine idle, excessive engine vibration, and abnormal engine movement.

2. What are the possible causes of OBDII code P16C7?

- The code P16C7 can be triggered by a faulty rear engine mount actuator, damaged wiring or connectors in the control circuit, or issues with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P16C7?

- Diagnosing code P16C7 involves inspecting the rear engine mount actuator, checking the wiring and connectors for any damage, and using a scan tool to monitor the actuator control circuit.

4. Can driving with OBDII code P16C7 cause further damage to my vehicle?

- Driving with code P16C7 may lead to increased engine vibrations and potentially cause damage to other engine components over time if left unresolved.

5. How can I repair OBDII code P16C7?

- Repair options include replacing the rear engine mount actuator, repairing any damaged wiring or connectors, and resetting the fault codes using a scan tool after the repair is completed.

6. Is it safe to continue driving my vehicle with OBDII code P16C7?

- It is not recommended to continue driving with code P16C7 as it can affect the performance and stability of your vehicle. It is best to address the issue promptly.

7. Can a DIY enthusiast fix OBDII code P16C7 at home?

- DIY enthusiasts with automotive repair experience may be able to diagnose and repair code P16C7 at home, but it is recommended to seek professional help if unsure about the diagnosis or repair process.

8. How much does it typically cost to repair OBDII code P16C7 at a mechanic or dealership?

- The cost to repair code P16C7 can vary depending on the specific cause of the issue, but it may range from $200 to $500 at a mechanic or dealership, including parts and labor.

9. Are there any preventive measures to avoid OBDII code P16C7 in the future?

- Regularly inspecting the engine mounts, checking for any signs of wear or damage, and addressing any abnormal engine vibrations promptly can help prevent OBDII code P16C7 from occurring.

10. Will resetting the fault codes using a scan tool make OBDII code P16C7 disappear permanently?

- Resetting the fault codes may temporarily clear the code, but if the underlying issue causing code P16C7 is not resolved, the code is likely to reappear during driving.