P0305
27 owner reports and 168 manufacturer filings across 80 model years from Acura, Audi, Buick, Cadillac and others.
Where P0305 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 60 model years where P0305 appears most; it is on file for 80 in total.
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.
The vehicle was taken back to the independent mechanic, who retrieved diagnostic trouble codes P11F0 (Air-Fuel Ratio Imbalance) and P0305 (Misfire In Cylinder Number 5)
Diagnostic Evidence: At the time of service, the vehicle stored the exact diagnostic trouble codes (DTCs) specified in the bulletin: Fuel/Misfire Codes: P0302, P0303, P0305, P219A Catalytic Efficiency Codes: P0420, P0430 Repairs &…
Utility 4D Altitude 4WD 3.6L V6 2020 Jeep Grand Cherokee My 2020 Jeep Grand Cherokee with 3.6L Pentastar V6 engine check engine light came on at 115,000 miles with a P0305 code
The vehicle’s fuel injector connectors, specifically connector C1E121A, had misaligned pins causing injector circuit faults (DTC codes P0262, P0274) and frequent misfire codes (P0301, P0305, P0300)
Prior to the failure, we noticed several warning signs, including an illuminated check engine light, rough idling, and multiple diagnostic trouble codes (DTCs), such as P0018, P0019, P0300, P0304, P0305, and P0306
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0305. 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
- 18-050-262026-04-18 · 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 duri
- 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
- 18-071-24 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 P0305 means
Source: SAE J2012 / OBD-IICylinder 5 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 P0305
Source: NHTSA files and the OBD-II standardCan I keep driving with P0305 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.