P0306
25 owner reports and 145 manufacturer filings across 60 model years from Acura, Audi, Chrysler, Dodge and others.
Where P0306 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2021 Audi A6 | Electrical System | 12 | — |
| 2020 Audi A6 | Engine | 8 | — |
| 2021 Audi A7 | Engine | 8 | — |
| 2019 Audi A6 | Equipment | 7 | — |
| 2019 Audi A7 | Equipment | 7 | — |
| 2016 Acura MDX | Equipment | 3 | 2 |
| 2020 Audi Q8 | Engine | 5 | — |
| 2019 Audi Q8 | Engine | 5 | — |
| 2017 Lincoln MKZ | Engine And Engine Cooling | 5 | — |
| 2025 Ram 1500 | Power Train | 5 | — |
| 2020 Audi A7 | Engine | 4 | — |
| 2021 Audi Q7 | Engine | 4 | — |
| 2020 Audi Q7 | Engine | 4 | — |
| 2021 Audi Q8 | Engine | 4 | — |
| 2021 Audi RS | Engine | 4 | — |
| 2016 Ford Edge | Engine And Engine Cooling | 4 | — |
| 2016 Ford F-150 | Engine And Engine Cooling | 3 | 1 |
| 2017 Ford Fusion | Engine And Engine Cooling | 4 | — |
| 2017 Lincoln Continental | Engine And Engine Cooling | 4 | — |
| 2016 Lincoln MKX | Engine And Engine Cooling | 4 | — |
| 2017 Chrysler Pacifica | Power Train | — | 3 |
| 2017 Ford Edge | Engine | 3 | — |
| 2018 Ford GT | Engine And Engine Cooling | 3 | — |
| 2017 Ford GT | Engine And Engine Cooling | 3 | — |
| 2016 Kia Sedona | Engine | — | 3 |
| 2017 Lincoln MKX | Engine | 3 | — |
| 2022 Audi A6 | Electrical System | 2 | — |
| 2021 Audi S6 | Engine | 2 | — |
| 2020 Audi S6 | Engine | 2 | — |
| 2021 Audi S7 | Engine | 2 | — |
| 2020 Audi S7 | Engine | 2 | — |
| 2019 Chrysler Pacifica | Engine | — | 2 |
| 2019 Dodge Challenger | Engine | 2 | — |
| 2019 Honda Pilot | Fuel/Propulsion System | — | 2 |
| 2022 Jeep Grand Cherokee | Power Train | 2 | — |
| 2017 Lexus RX | Engine | 2 | — |
| 2016 Lexus RX | Engine | 2 | — |
| 2017 Acura RDX | Electronic Stability Control (Esc) | — | 1 |
| 2022 Audi A7 | Electrical System | 1 | — |
| 2017 Audi Q7 | Engine | — | 1 |
| 2026 Ford Explorer | Unknown Or Other | 1 | — |
| 2022 Ford GT | Engine And Engine Cooling | 1 | — |
| 2021 Ford GT | Engine And Engine Cooling | 1 | — |
| 2020 Ford GT | Engine And Engine Cooling | 1 | — |
| 2019 Ford GT | Engine And Engine Cooling | 1 | — |
| 2019 Honda Odyssey | Engine | — | 1 |
| 2017 Honda Pilot | Engine | — | 1 |
| 2016 Honda Pilot | Engine | — | 1 |
| 2017 Honda Ridgeline | Engine | — | 1 |
| 2026 Hyundai Palisade | Engine | — | 1 |
| 2018 Hyundai Santa Fe | Engine | — | 1 |
| 2016 Jeep Wrangler | Electrical System | 1 | — |
| 2016 Kia Sorento | Engine | — | 1 |
| 2017 Land Rover Discovery | Engine | — | 1 |
| 2026 Lincoln Aviator | Unknown Or Other | 1 | — |
| 2025 Lincoln Aviator | Power Train | 1 | — |
| 2022 Nissan Frontier | Engine And Engine Cooling | 1 | — |
| 2018 Nissan Pathfinder | Engine | — | 1 |
| 2023 Ram 1500 | Power Train | 1 | — |
| 2019 Ram 2500 | Fuel/Propulsion System | — | 1 |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Condition: The vehicle must display a Malfunction Indicator Light (Check Engine Light) with specific stored fuel-system error codes (such as P0300 through P0306, P0420, P0430, P219A, or P219B)
The dealer confirmed fault codes P0303 (Cylinder 3 Misfire), P0306 (Cylinder 6 Misfire), and P0300 (Random/Multiple Misfire) on both visits
The check engine light is on my Chrysler Pacifica 2017 Limited with error codes P0302 and P0306, indicating misfires in the second and sixth cylinders
2025 the dealer scanned the vehicle and found codes p0301, p0302, p0303, p0306 cylinder 1 2 3 and 6 misfires
The dashboard displayed the message: “Drive System Malfunction – Contact Service.â€� These diagnostic trouble codes (DTCs) appeared: •P2179 •P025C •P0087 •P0306 This incident posed a major safety risk, as I was unable to steer…
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0306. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SSM 549482026-06-18 · Unknown Or Other
- Some 2025-2026 Explorer/Aviator/Police Interceptor Utility non-hybrid vehicles built on 06-Feb-2025 and through 13-Dec-2025 may exhibit various drivability symptoms including a rough idle or hesitation shortly after refueling. These symptoms may also be accompanied by liquid fuel in the fuel vapor lines and fuel vapor canister as well as an illuminated malfunction indicator lamp (MIL) with diagnos
- 18-049-262026-04-18 · Power Train
- Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): â—� **P0300 - Multiple Cylinder Misfire - In Active or Stored status set during cold start catalyst heating. â—� P0301 - Cylinder 1 Misfire - In Active or Stored status set du
- SSM 545042026-01-16 · Exterior Lighting
- Some 2016-2017 Edge/MKX, 2017 Continental/Fusion/MKZ vehicles equipped with a 2.7L or 3.0L EcoBoost engine and built on 1-Apr-2016 and through 1-Jan-2017 may exhibit white or blue smoke from the exhaust, rough idle in neutral or park at normal operating temperature or after a hot restart. The vehicle may also exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DT
- 18-002-252025-01-25 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): â—� **P0300 - Multiple Cylinder Misfire. â—� P0301 - Cylinder 1 Misfire. â—� P0304 - Cylinder 4 Misfire. â—� P0306 - Cylinder 6 Misfire. â—� P0307 - Cylinder 7 Misfire. â—� P3400 - Cy
- 18-071-24 REV. B2024-11-01 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): â—� **P0325 - Knock/Combustion Vibration Sensor 1 Circuit. â—� P0330 - Knock/Combustion Vibration Sensor 2 Circuit. â—� P032A - Knock-Combustion Vibration Sensor C Circuit.** â—� P018
- 18-071-24 REV. A2024-10-08 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): â—� P018B - Fuel Pressure Sensor ""B"" Circuit Range/performance. â—� P2AF6 - Starter Relay 3 Stuck Off. â—� P1CEA - Boost Side EVAP Purge System Performance. â—� U0104 - Lost Communi
What P0306 means
Source: SAE J2012 / OBD-IICylinder 6 is misfiring.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P0306
Source: NHTSA files and the OBD-II standardCan I keep driving with P0306 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.