OBD code P0307 indicates a misfire in cylinder 7 of the engine.
This fault affects the ignition system.
Symptoms include the engine light being on, lack of power, hard starting, and engine hesitation.
Common causes are a faulty spark plug, clogged/faulty fuel injector, or ignition coil issues.
It is a moderate issue that should be addressed promptly.
To fix it, inspect and potentially replace the faulty components and check wiring connections for any issues.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
I know how frustrating it is to see that warning light pop up again and again. You don’t need to spend money at the mechanic just to clear it. With this pocket-friendly automatic car scanner, you can do it yourself in seconds and and avoid the time and inconvenience of driving to a mechanic. Just plug it in, connect to your Android or iOS phone, and instantly see live data. Understand the fault code, clear it right away, and decide if it’s something urgent or if you’re good to drive. It even monitors your car and sends notifications to your phone, so you’re always in control. Simple, fast, and stress-free—today’s offer price!
Symptoms of the p0307 OBD Code
The engine runs rough and misfires on cylinder 7, indicated by fault code P0307.
- With OBD code P0307, the engine light will be ON.
- Lack/loss of power may be experienced.
- Hard start can occur.
- Engine hesitation might be noticeable.
Do you know you can clear most fault codes—but some could mean serious danger? Don’t take chances with your safety or your family’s safety. This budget-friendly car scanner makes it easy to clear fault codes in seconds while showing you exactly what’s wrong. Plug it in, connect to your Android or iOS phone, and instantly check live data. You’ll know if it’s a minor issue you can clear or something serious that needs attention—so you can drive safely and stress-free. (Today’s Deal)
Causes of the p0307 OBD Code
Fault code P0307 indicates a misfire in cylinder 7 of the engine.
- P0307 can be caused by a faulty spark plug 7.
- Clogged or faulty fuel injector 7.
- A faulty ignition coil 7.
- An open or shorted fuel injector 7 harness.
- A poor electrical connection in the fuel injector 7 circuit.
- An open or shorted ignition coil 7 harness.
- A poor electrical connection in the ignition coil 7 circuit.
- Insufficient cylinder 7 compression.
- Incorrect fuel pressure.
- Or an intake air leak.
Fixing Error Code p0307 Step By Step
Address cylinder 7 misfire by checking spark plugs, ignition coil, fuel injector, and compression.
- To fix OBDII code P0307, first, review the possible causes related to cylinder 7 misfire.
- Visually inspect the ignition system components such as spark plugs, ignition coils, and spark plug wires for any signs of wear or damage.
- Check the fuel injector for proper operation and ensure it is delivering fuel correctly to cylinder 7.
- Test the compression in cylinder 7 to rule out any internal engine issues causing the misfire.
- If all components check out, consider swapping the ignition coil with another cylinder to see if the misfire follows.
- Finally, clear the fault code and test drive the vehicle to verify if the issue has been resolved.
Cost Of Fixing p0307 Fault Code
Diagnosing and repairing fault code P0307 may involve inspecting ignition components and cylinder 7.
The cost to diagnose and fix OBD code P0307 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Factors affecting the cost include shop rates, parts needed, and the complexity of the repair.
Details of the p0307 OBD Code
Fault code P0307 indicates a misfire in cylinder 7 of the engine.
OBD code P0307 means a misfire was detected in cylinder 7. It’s triggered by the Engine Control Module (ECM) based on crankshaft speed fluctuations.
The signal involved is the feedback from the crankshaft position sensor, which helps the ECM monitor the rotational speed of the engine and detect misfires in specific cylinders.
Mechanic’s Tech Notes
Code P0307 indicates a misfire in cylinder 7 of the engine.
To diagnose and fix OBDII code P0307 (Cylinder 7 Misfire Detected), start by checking the ignition system components like spark plugs, ignition coils, and spark plug wires for any faults.
Use a voltmeter to test the coil’s primary and secondary resistance.
Inspect the fuel injector for proper operation and connection.
Perform a compression test on cylinder 7 to check for any internal engine issues.
A scan tool can help monitor live data and identify specific cylinder misfire counts.
Address any issues found in the ignition, fuel, or compression systems to resolve the misfire on cylinder 7.
FAQ
Common causes of OBD code P0307: Faulty spark plug 7, clogged/faulty fuel injector 7, faulty ignition coil 7, poor electrical connections, insufficient cylinder compression, incorrect fuel pressure.
Diagnose P0307 by checking spark plug, fuel injector, ignition coil 7, compression, fuel pressure, and intake air. Inspect wiring and connectors for damage or corrosion.
It is not safe to continue driving with OBD code P0307. Address the causes mentioned, focusing on spark plug, fuel injector, ignition coil, and related components.
Wrap Up
If your check engine light is on and your engine is running rough, you may have OBDII code P0307, indicating a misfire in cylinder 7. This could be caused by a faulty spark plug, ignition coil, fuel injector, or low compression in that cylinder.
To address OBDII code P0307, start by checking the spark plug, ignition coil, and fuel injector for cylinder 7. Inspect the wiring harness and connectors for any damage or corrosion that could be affecting the components’ performance.
