The OBD code P0301 for Ford indicates a misfire in cylinder 1. This affects the engine’s performance, causing symptoms like engine light on, lack of power, hard starting, and 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.
To fix it, inspect and potentially replace the spark plug, fuel injector, or ignition coil, and check related wiring for any faults.
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 Ford p0301 OBD Code
The vehicle may experience rough idling or a noticeable lack of power under load.
- With Ford OBD code P0301, the engine light will be ON.
- Lack/loss of power may be experienced.
- Hard starting can occur.
- Engine hesitation might be noticeable.
Causes of the Ford p0301 OBD Code
Fault code P0301 on a Ford typically indicates a misfire in cylinder 1.
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- P0301 can be caused by Faulty Spark Plug #1.
- Clogged or faulty Fuel Injector #1.
- Faulty Ignition Coil #1.
- Fuel Injector #1 harness is open or shorted.
- Fuel Injector #1 circuit poor electrical connection.
- Ignition Coil #1 harness is open or shorted.
- Ignition Coil #1 circuit poor electrical connection.
- Insufficient cylinder 1 compression.
- Incorrect fuel pressure.
- Intake air leak.
Fixing Ford Error Code p0301 Step By Step
Address the misfire issue on cylinder 1 in a Ford vehicle with fault code P0301.
- To fix a Ford OBDII code P0301, start by reviewing the possible causes related to cylinder 1 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 to the cylinder.
- Test the compression in cylinder 1 to verify the engine’s mechanical condition.
- If all components check out, consider swapping the ignition coil or fuel injector with another cylinder to see if the misfire follows.
- Finally, reset the vehicle’s engine control module (ECM) to clear the code and monitor the vehicle for any recurring issues.
Cost Of Fixing Ford p0301 Fault Code
The repair for Ford P0301 (Cylinder 1 Misfire Detected) typically involves diagnosing and replacing faulty ignition components.
The cost to diagnose and fix the Ford OBD code P0301 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.
Details of the Ford p0301 OBD Code
Ford code P0301 indicates a misfire in cylinder 1.
Code P0301 means a misfire was detected in cylinder 1 of the engine.
This code is triggered by the Engine Control Module (ECM) when it detects a misfire during the crankshaft speed fluctuations.
The ECM monitors the engine’s crankshaft speed to detect any irregularities in the firing of the cylinders.
In this case, cylinder 1 is specifically identified as the cylinder where the misfire occurred.
Mechanic’s Tech Notes
For Ford code P0301, check for misfire in cylinder 1, likely caused by spark plug, coil, or injector issues.
To diagnose and fix OBDII code P0301 on a Ford, start by checking the ignition system components like spark plugs, ignition coils, and spark plug wires for any issues.
Use a voltmeter to test the ignition coil’s primary and secondary circuits for proper voltage and resistance.
Inspect the fuel injector for clogging or malfunction.
Perform a compression test to check the engine’s mechanical condition.
Additionally, scan for any pending or stored codes that could provide more insight into the issue.
Address any identified faults accordingly to resolve the misfire on cylinder 1.
FAQ
Common causes of OBD code P0301 in a Ford vehicle include a faulty spark plug #1, clogged/faulty fuel injector #1, faulty ignition coil #1, or insufficient cylinder 1 compression.
Diagnose P0301 in Ford: Check Spark Plug #1, Fuel Injector #1, Ignition Coil #1, compression, fuel pressure, air leaks. Inspect wiring harness, connectors for damage, corrosion.
It is not safe to continue driving with OBD code P0301 in your Ford. Address the causes listed, focusing on Spark Plug #1, Fuel Injector #1, and Ignition Coil #1.

Wrap Up
If your Ford is running rough with OBD code P0301, it may be caused by a misfire in cylinder 1 due to issues like a faulty spark plug, ignition coil, fuel injector, or vacuum leak.
To address Ford OBD code P0301, check and replace the spark plug, ignition coil, or fuel injector in cylinder 1. Inspect the vacuum lines for leaks and ensure proper connections.
Consider performing a compression test to rule out internal engine issues.