[SOLVED] Dodge P0304 Code: Fast Fix For Cylinder Misfire

The OBD code P0304 for Dodge indicates a misfire in cylinder 4. This affects the engine’s performance, causing symptoms like engine light on, lack of power, hard starting, and engine hesitation.

Common causes include a faulty spark plug, clogged fuel injector, or ignition coil issues.

While not an immediate danger, it can lead to further engine damage if left unresolved.

A possible fix involves inspecting and repairing the components related to cylinder 4, such as spark plugs, fuel injectors, and ignition coils, along with checking wiring harnesses and connectors for any damage.

Repair Importance Level	10.0 (Out of 10)
Estimated Repair Time	Approximately 1.0 hour
Repair Difficulty Level	10.0 (Out of 10)

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Symptoms of the Dodge p0304 OBD Code

The Dodge specific fault code P0304 indicates a misfire in cylinder 4.

With Dodge OBD code P0304, the Engine Light will be ON.
Lack/loss of power may be experienced.
Hard start can occur.
Engine hesitation might be noticeable.

Causes of the Dodge p0304 OBD Code

Possible reasons for Dodge fault code P0304 include ignition system faults and fuel delivery issues.

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P0304 can be caused by Faulty Spark Plug #4.
Clogged or faulty Fuel Injector #4.
Faulty Ignition Coil #4.
Fuel Injector #4 harness is open or shorted.
Fuel Injector #4 circuit poor electrical connection.
Ignition Coil #4 harness is open or shorted.
Ignition Coil #4 circuit poor electrical connection.
Insufficient cylinder 4 compression.
Incorrect fuel pressure.
Intake air leak.

Fixing Dodge Error Code p0304 Step By Step

Address the misfire on cylinder 4 in a Dodge by checking spark plugs and ignition components.

To fix a Dodge OBDII code P0304, start by reviewing the possible causes mentioned above.
Visually examine the corresponding wiring harness and connectors for any damage.
Check the connector pins for signs of being broken, bent, pushed out, or corroded.
If the wiring and connectors appear to be in good condition, proceed to inspect the ignition system components such as spark plugs, ignition coils, and spark plug wires for any faults.
Replace any faulty ignition components as needed.
Clear the fault code using an OBDII scanner and test drive the vehicle to ensure the issue has been resolved.

Cost Of Fixing Dodge p0304 Fault Code

The repair for Dodge code P0304 may involve replacing spark plugs, ignition coils, or performing engine compression test.

The cost to diagnose and fix the Dodge OBD code P0304 depends on the estimated 1. 0hour repair time.

Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150, excluding parts.

Costs may vary based on shop rates and the complexity of the repair.

Details of the Dodge p0304 OBD Code

Dodge fault code P0304 indicates a misfire in cylinder 4.

Code P0304 means a misfire was detected in cylinder 4 of the engine.

It is triggered by the Engine Control Module (ECM) based on variations in crankshaft speed that indicate a misfire in that specific cylinder.

This code is typically associated with issues such as faulty spark plugs, ignition coils, fuel injectors, or compression problems in cylinder 4.

Mechanic’s Tech Notes

For Dodge code P0304, this section provides detailed diagnostic and repair information.

To diagnose and fix OBDII code P0304 on a Dodge, start by checking the ignition system components for cylinder 4. Use a voltmeter to test the spark plug, ignition coil, and spark plug wire for proper operation.

Inspect for any signs of wear or damage.

Additionally, perform a compression test on cylinder 4 to ensure engine health.

If no issues are found, consider checking the fuel injector for proper operation and connectivity.

A scan tool can help monitor live data and identify any anomalies in the fuel system.

Lastly, inspect the wiring harness and connectors related to cylinder 4 for any damage or corrosion.

FAQ

1. What are the common causes of OBD code P0304 in a Dodge vehicle?

Common causes of OBD code P0304 in a Dodge vehicle include faulty Spark Plug #4, clogged Fuel Injector #4, faulty Ignition Coil #4, and poor electrical connections.

2. How can I diagnose and fix a misfire related to OBD code P0304 in my Dodge?

Diagnose P0304 misfire in Dodge: Check spark plug, fuel injector, ignition coil #4. Inspect wiring for damage, connector pins for issues. Fix as needed.

3. Is it safe to continue driving my Dodge with OBD code P0304,

It is not safe to continue driving with OBD code P0304 on a Dodge. Address the causes listed, focusing on Spark Plug #4, Fuel Injector #4, and Ignition Coil #4.

Wrap Up

If your Dodge is experiencing a misfire with OBD code P0304, it may be caused by a faulty ignition coil, spark plug, fuel injector, or low compression in cylinder 4. Check for worn spark plugs, damaged ignition coils, clogged fuel injectors, or low compression in that cylinder.

To address Dodge OBD code P0304, inspect and replace any faulty spark plugs, ignition coils, or fuel injectors in cylinder 4. Perform a compression test to ensure proper engine cylinder compression.

Check wiring harness connections for any signs of damage or corrosion.