AutoCodes – Honda – P16D7 Honda

P16D7 Honda Code - PCM Internal F-CAN Communication Circuit Malfunction

Quick Answer

The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL). Common causes include Controller Area Network (CAN) Communication, Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted. 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: P16D7 Honda indicates PCM Internal F-CAN Communication Circuit Malfunction.
Common causes: Common causes include Controller Area Network (CAN) Communication, Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted.
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 3,008

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 P16D7 Honda Description

The Controller Area Network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL).
When F-CAN communication between the FI CPU and the CVT CPU inside the Powertrain Control Module (PCM) is abnormal and F-CAN communication is interrupted for a specified time, a malfunction is detected and a DTC is stored.

OBDII Code P16D7 Honda - PCM Internal F-CAN Communication Circuit Malfunction - AutoCodes.com — P16D7 Honda Code - PCM Internal F-CAN Communication Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P16D7 Honda?

Controller Area Network (CAN) Communication
Faulty Powertrain Control Module (PCM)
Powertrain Control Module (PCM) harness is open or shorted
Powertrain Control Module (PCM) circuit poor electrical connection

How to Fix the DTC P16D7 Honda?

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 P16D7 Honda 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 P16D7 Honda code?

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Need Help with the Code?

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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 P16D7 Honda Code

1. What are the common symptoms of OBDII code P16D7 in a Honda vehicle?

Symptoms may include rough idling, engine misfires, reduced engine performance, and the illumination of the check engine light.

2. What can cause the OBDII code P16D7 in a Honda car?

The code P16D7 indicates a malfunction in the PCM internal F-CAN communication circuit, which can be caused by wiring issues, loose connections, or a faulty PCM.

3. How serious is the PCM Internal F-CAN Communication Circuit Malfunction in a Honda?

This issue should be addressed promptly to prevent potential damage to the engine or other related systems. Ignoring the problem may result in poor engine performance or stalling.

4. Can I continue driving my Honda with the P16D7 trouble code?

It is not recommended to drive with the P16D7 code present, as it can lead to further issues or potential breakdowns. It's best to have the vehicle inspected and repaired as soon as possible.

5. How is the PCM Internal F-CAN Communication Circuit Malfunction diagnosed in a Honda?

Diagnosis typically involves using a professional OBDII scanner to read the trouble codes, followed by inspecting the wiring, connectors, and PCM for any visible damage or issues.

6. What are the repair options for fixing the P16D7 code in a Honda?

Repair options may include repairing or replacing damaged wiring, ensuring proper connections, or replacing the PCM if deemed necessary by a qualified technician.

7. Can a DIY enthusiast fix the PCM Internal F-CAN Communication Circuit Malfunction in a Honda?

While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing the root cause of the issue may require advanced knowledge and specialized tools, best left to professionals.

8. How much does it cost to repair the PCM Internal F-CAN Communication Circuit Malfunction in a Honda?

The cost of the repair can vary depending on the exact cause of the issue, the extent of the damage, and labor rates. It's advisable to get a few quotes from reputable repair shops to compare prices.

9. Will resetting the trouble codes make the P16D7 code go away permanently?

Resetting the trouble codes may temporarily turn off the check engine light, but if the underlying issue causing the P16D7 code is not addressed, the code is likely to reappear once the vehicle is driven again.

10. How can I prevent the PCM Internal F-CAN Communication Circuit Malfunction in my Honda?

Regular maintenance, including checking the wiring harness and connectors for signs of wear or damage, can help prevent issues like the P16D7 code from occurring.