Land Rover P0304-00
Cylinder 4 Misfire P0305-00 – Cylinder 5 Misfire P0306-00 – Cylinder 6 Misfire 9/16/26, 8:15 AM TOPIx - SSM76507 - AJ20P6 PHEV Combustion Instability https://topix.landrover.jlrext
Common search variants: P030400 · P0304 00 · P0304_00 · Search ignores case and common separators.
Quick answer
Land Rover P0304-00: Cylinder 4 Misfire P0305-00 – Cylinder 5 Misfire P0306-00 – Cylinder 6 Misfire 9/16/26, 8:15 AM TOPIx - SSM76507 - AJ20P6 PHEV Combustion Instability https://topix.landrover.jlrext
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does Land Rover P0304-00 mean?
Land Rover P0304-00: Cylinder 4 Misfire P0305-00 – Cylinder 5 Misfire P0306-00 – Cylinder 6 Misfire 9/16/26, 8:15 AM TOPIx - SSM76507 - AJ20P6 PHEV Combustion Instability https://topix.landrover.jlrext
2. Technical explanation
The identity of P0304-00 is verified for Land Rover. Available evidence does not yet establish a narrower subsystem or component-level failure.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Not yet established by verified evidence. Urgency must be based on the exact vehicle warning and official guidance.
5. Land Rover P0304-00 symptoms you may notice
Not yet established by verified evidence.
6. Possible causes of Land Rover P0304-00
Not yet established by verified evidence. A diagnostic identifier alone is not proof that a specific component has failed.
7. Can I drive with Land Rover P0304-00?
Not yet established by verified evidence.
8. Can I charge with Land Rover P0304-00?
Not yet established by verified evidence.
9. What you can safely do
- Preserve the exact diagnostic code and any accompanying vehicle warning before clearing anything.
- Follow the manufacturer instructions shown in the vehicle or owner/service documentation.
- Do not open or work on high-voltage components unless you are qualified and equipped for high-voltage service.
10. How to troubleshoot Land Rover P0304-00
- Record the exact code, warning text, vehicle model, model year, and operating condition when it appeared.
- Check the verified manufacturer or regulator source linked on this page for code-specific instructions.
- Avoid replacing parts based only on the code; code-specific component tests are not inferred when evidence does not provide them.
- Escalate to qualified service when the warning persists, affects driving/charging, or manufacturer guidance requires service.
11. When to contact service
Qualified service should be contacted if the warning persists, returns after a normal manufacturer-permitted restart, or affects driving or charging.
12. What the service center may check
Not yet established by verified evidence.
13. Possible repair or resolution for Land Rover P0304-00
Not yet established by verified evidence.
14. Affected vehicles
- Land Rover Range Rover · 2025 · US
15. Related TSBs / service bulletins
- NHTSA: NHTSA Manufacturer Communication PDF 11038295: SSM76507 - 16SEP26
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
ck of power during acceleration NOTE: This SSM applies only to vehicles that meet the following diagnostic criteria: Primary Criteria At least four of the following misfire Diagnostic Trouble Codes (DTCs) must be stored in the Powertrain Control Module (PCM): P0301-00 – Cylinder 1 Misfire P0302-00 – Cylinder 2 Misfire P0303-00 – Cylinder 3 Misfire P0304-00 – Cylinder 4 Misfire P0305-00 – Cylinder 5 Misfire P0306-00 – Cylinder 6 Misfire 9/16/26, 8:15 AM TOPIx - SSM76507 - AJ20P6 PHEV Combustion Instability https://topix.landrover.jlrext.com/topix/content/document/view?id=1854972 1/3 Secondary Criteria (SSM still applicable even if fewer than four misfire DTCs are present) If fewer than four of the ab
19. Land Rover P0304-00 frequently asked questions
What does P0304-00 mean?
Land Rover P0304-00: Cylinder 4 Misfire P0305-00 – Cylinder 5 Misfire P0306-00 – Cylinder 6 Misfire 9/16/26, 8:15 AM TOPIx - SSM76507 - AJ20P6 PHEV Combustion Instability https://topix.landrover.jlrext
Can I drive with P0304-00?
Not yet established by verified evidence.
Can I charge with P0304-00?
Not yet established by verified evidence.
Does P0304-00 require service?
Qualified service should be contacted if the warning persists, returns after a normal manufacturer-permitted restart, or affects driving or charging.