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AutoCodes - Generic - P16C9

P16C9 Code - Engine Mount Control Unit Internal Circuit Malfunction

- Code Popularity: 4,470 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P16C9?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Engine Mount Control Unit
  • Engine Mount Control Unit harness is open or shorted
  • Engine Mount Control Unit circuit poor electrical connection
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How to Fix the DTC P16C9?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16C9 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P16C9 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 P16C9 - Engine Mount Control Unit Internal Circuit Malfunction - AutoCodes.com
P16C9 Code - Engine Mount Control Unit Internal Circuit Malfunction

Need More Information on the Code?

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Information for Specific Makes

  • P16C9 Acura Engine Mount Control Unit Internal Circuit Malfunction
  • P16C9 Honda Engine Mount Control Unit Internal Circuit Malfunction

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Code P16C9 comments

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