Car owner guidesHonda Fit GP5

Honda Fit GP5 Hybrid: DCT History & Parts-Order Checks

Build a useful GP5 service record before ordering parts: recall completion, 2WD DCT-fluid scope, engine identity and the documented original spark-plug reference.

Time
10–15 minutes to prepare a service request
Difficulty
Easy
Tools
2 needed
Instructions
5 steps

Applies to Honda Fit GP5 · Japan GP5 hybrid; Honda campaign 3391, Fit Hybrid manual 30T5C6310 and NGK August 2021 bulletin. Japan GP5 hybrid; Honda campaign 3391, Fit Hybrid manual 30T5C6310 and NGK August 2021 bulletin. Always compare the described parts, labels and specifications with your own vehicle and manual.

Manual-referencedHonda campaign 3391July 2014: engine-control software action, GP5 serial ranges and exclusions
Review evidence and limitations ↓

For owners in Pakistan / Kenya These are the cited Japan-market references, not local-market specifications or evidence of parts availability.

Identify before you buy

Three records that answer three different questions

Honda Fit GP5 · manufacturer scope and owner decision
What you haveWhat the evidence establishesNext owner decision
Honda campaign 3391Engine-control software action with specific serial rangesObtain applicability and completion confirmation.
GP5 2WD transmission serviceATF-DW1; cited replacement-operation referenceAgree the operation; never use a total-fill assumption.
Original plug identityDILZKAR7C11S / 12290-5R0-003, four in NGK rowVerify current chassis-specific ordering identity.

Selection aid only. An unknown or conflicting configuration needs confirmation before purchase.

Have these references ready

  • Exact chassis and production-period record
  • Relevant manual and itemised service proposal

Step-by-step instructions

Choose the correct manufacturer-backed specification

Use these source-backed checks to identify the option for your exact equipment. This is a selection guide, not a hands-on replacement procedure. If a component or label looks different on your car, stop and check your own manual.

  1. Step 1 of 5

    Match GP5 rather than a petrol Fit or GP6

    Record the full chassis serial, LEB hybrid identity and production period before collecting a service quote. A seller's Jazz/Fit label or shared body shape does not establish gearbox, battery or ignition-part compatibility. Keep the engine service, dual-clutch transmission and separate battery systems as distinct sections in the record.

    All steps ↑
  2. Step 2 of 5

    Ask Honda to verify campaign applicability and completion

    Honda campaign 3391 is an engine-control-computer software action with listed GP5 serial ranges and production periods. It is not a blanket mechanical DCT replacement campaign. Ask Honda to check the exact serial and retain the completion record; a registration year, model-name match or seller's general claim is insufficient. The notice itself says some vehicles inside stated ranges may not need the work.

    All steps ↑
  3. Step 3 of 5

    Keep DCT-fluid evidence tied to the correct operation

    The cited Fit Hybrid manual's GP5 2WD reference names Honda Ultra ATF-DW1 and a 1.3 L replacement quantity. This is not a total/dry-fill amount or a fluid for every Fit transmission. Ask the workshop to specify the operation, product and vehicle before authorising service. An oil change is not evidence that a warning, judder or delay has been diagnosed.

    All steps ↑
  4. Step 4 of 5

    Use a complete ignition-part identity when a plug order is justified

    NGK's bulletin lists the GP5/GP6 LEB original plug DILZKAR7C11S and Honda reference 12290-5R0-003, quantity four. Confirm any current supersession for the actual chassis. Do not extend that shared plug row to filters, coils or gearbox parts; similarity of one component does not establish interchangeability of the rest.

    All steps ↑
  5. Step 5 of 5

    Keep hybrid ownership observations separate from repair authority

    Attach dated invoices, odometer readings, actual warning messages and the workshop's findings. Use the existing GP5 storage-care and cabin-filter guides for their distinct tasks. No stored record or dashboard energy display proves traction-battery health. For owners outside Japan, keep the JDM source edition with local workshop paperwork rather than changing its specification to the destination country.

    All steps ↑

References & limitations

Where these instructions come from

Japan GP5 hybrid; Honda campaign 3391, Fit Hybrid manual 30T5C6310 and NGK August 2021 bulletin

Manufacturer facts are limited to the cited edition and configuration. The decision table and service-request checklist are original CarFactBook editorial aids, not a fault diagnosis, workshop procedure or approval of an unverified part.

Honda campaign 3391 ↗

Manual section: July 2014: engine-control software action, GP5 serial ranges and exclusions

Instructions checked against manufacturer documentation; not a physical inspection of every vehicle.