2021 Honda Civic Type R MIL On DTC P0300 P0304

Background: Honda's Investigation into MIL and Misfire DTCs

American Honda Motor Co., Inc. (AHM) has initiated a special request for parts related to customer complaints of the "Malfunction Indicator Light (MIL)" illuminating on the dashboard of certain 2021 Honda Civic Type R vehicles. This condition is specifically associated with the storage of diagnostic trouble codes (DTCs) P0300, indicating a "Random Misfire Detected," and/or P0304, which signifies a "No. 4 Cylinder Misfire Detected."

To gain a deeper understanding of the underlying cause of this specific misfire condition, AHM is seeking to collect particular components from affected vehicles. This proactive approach aims to facilitate a thorough investigation before any repair attempts are made by dealerships. Owners of a 2021 Civic Type R P0300 P0304 issue should be aware of this ongoing data collection effort.

Symptoms

The primary symptom owners will notice is the illumination of the "Malfunction Indicator Light (MIL)" on the instrument cluster. This warning light indicates a detected issue within the vehicle's engine or emissions system. When scanned, the vehicle's onboard diagnostic system will reveal specific diagnostic trouble codes related to engine misfires.

Fault Codes / DTCs

This investigation specifically targets vehicles that have stored the following diagnostic trouble codes:

• P0300: Random Misfire Detected
• P0304: No. 4 Cylinder Misfire Detected

It is important to note that if other misfire codes such as P0301 (Cylinder 1 Misfire), P0302 (Cylinder 2 Misfire), or P0303 (Cylinder 3 Misfire) are stored, the vehicle does not qualify for this particular parts collection program.

Qualifying Conditions for Participation

American Honda Motor Co., Inc. is interested in collecting parts only from 2021 Honda Civic Type R vehicles that meet a strict set of criteria. For a vehicle to qualify for this program, it must:

• Exclusively have DTC P0300 and/or P0304 stored. The presence of P0301, P0302, or P0303 will disqualify the vehicle.
• Show no deformation or chipping around the plug top coil seating area.
• Have not been involved in a collision.
• Have had no repair attempts made for the specific misfire issue.

Previous replacements of the cylinder head cover, plug top coil, or spark plugs are acceptable, provided that these prior repairs are fully disclosed to Honda's Technical Information & Support team. This ensures that the collected parts provide accurate data for the investigation into the Civic Type R P0300 P0304 problem.

Important Warnings for Owners and Technicians

Owners and dealership personnel should be aware of critical conditions that affect eligibility for this program:

• Do not attempt any repair for this issue prior to contacting TIS. Honda specifically requests to collect parts before any repair is attempted to ensure the integrity of the components for analysis.
• Vehicles with DTCs P0301, P0302, or P0303 do not qualify. If these codes are present alongside P0300 or P0304, the vehicle is not eligible for this specific parts collection.

Adhering to these guidelines is crucial for the successful execution of Honda's investigation into the Civic Type R P0300 P0304 issue.

Action Required for Owners

If your 2021 Honda Civic Type R matches the qualifying conditions described above, your dealership should contact Honda's Technical Information & Support (TIS) group. The TIS team can be reached via email at [email protected] or by phone at 800-880-1072, available Monday through Friday from 7 AM to 5 PM PST. The subject line for any email communication should be: "Request for Parts: 2017-2021 Civic Type R MIL On DTC P0300/P0304 (ACTION REQ'D)".

When contacting TIS, be prepared to provide the following information:

In the email title:

1. Model Year (e.g., 2021)
2. Model Name (e.g., Civic Type R)
3. Issue (e.g., MIL On DTC P0300/P0304)
4. VIN

In the email body:

1. Dealer Number
2. Your Name
3. Best Phone Number to be Reached
4. Current Mileage
5. DPTS#

This information will allow TIS to record your vehicle's details and provide further instructions regarding the parts collection process.

Technician Appreciation

As a gesture of appreciation, American Honda Motor Co., Inc. will provide a Visa gift card to dealer technicians who successfully identify and report a qualifying vehicle for this parts collection program. This incentive aims to encourage accurate identification and reporting of vehicles that meet the specific criteria for this investigation.

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Source: NHTSA ID: 10241868