AutoCodes – Ford – P0310 Ford

P0310 Ford Code - Cylinder 10 Misfire Detected

Quick Answer

Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause. Common causes include Faulty Spark Plug #10, Clogged or faulty Fuel Injector #10, Faulty Ignition Coil #10. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0310 Ford indicates Cylinder 10 Misfire Detected.
Common causes: Common causes include Faulty Spark Plug #10, Clogged or faulty Fuel Injector #10, Faulty Ignition Coil #10.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,079

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 09, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0310 Ford Description

Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause.
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
The Malfunction Indicator Lamp (MIL) blinks once per second when detecting a misfire severe enough to cause catalyst damage. If the MIL is in a steady state due to a misfire, this indicates the threshold for emissions was exceeded and caused the vehicle to fail an inspection and maintenance tailpipe test.
This Diagnostic Trouble Code (DTC) sets when the misfire detection monitor detects an engine misfire in cylinder 10.

OBDII Code P0310 Ford - Cylinder 10 Misfire Detected - AutoCodes.com — P0310 Ford Code - Cylinder 10 Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0310 Ford?

Faulty Spark Plug #10
Clogged or faulty Fuel Injector #10
Faulty Ignition Coil #10
Fuel Injector #10 harness is open or shorted
Fuel Injector #10 circuit poor electrical connection
Ignition Coil #10 harness is open or shorted
Ignition Coil #10 circuit poor electrical connection
Insufficient cylinder 10 compression
Incorrect fuel pressure
Intake air leak

How to Fix the DTC P0310 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

The P0310 code means that cylinder #10 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #10. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0310 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0310 Ford Code

What does the OBD-II code P0310 mean for a Ford vehicle?

The P0310 code indicates that the engine control module (ECM) has detected a misfire in cylinder 10 of the engine.

What are the common symptoms of a P0310 code in a Ford?

Symptoms may include rough idling, reduced engine performance, decreased fuel efficiency, and the check engine light turning on.

What causes the P0310 code in a Ford?

Common causes include a faulty spark plug, a malfunctioning ignition coil, a clogged fuel injector, low cylinder compression, or wiring issues.

Can driving with a P0310 code damage the engine?

Yes, prolonged driving with a misfire can lead to damage to the catalytic converter and other engine components.

How can I diagnose a P0310 code on my Ford?

Start by inspecting the spark plugs, ignition coils, and fuel injectors for cylinder 10. Use a scan tool to confirm the misfire and check related codes.

How do you fix a P0310 code in a Ford?

Repairs may include replacing spark plugs, ignition coils, or fuel injectors for cylinder 10, fixing wiring issues, or addressing low cylinder compression.

Can a dirty air filter cause the P0310 code?

While a dirty air filter can affect engine performance, it is not a direct cause of a cylinder-specific misfire like P0310.

Is the P0310 code specific to Ford vehicles?

No, the P0310 code can appear in other vehicles equipped with OBD-II systems, but the diagnostics and repairs may vary.

How much does it cost to fix the P0310 code on a Ford?

Repair costs vary based on the cause but typically range from $100 for spark plug replacement to $1,000+ for more complex issues like low compression.

Can bad fuel cause the P0310 code?

Yes, contaminated or low-quality fuel can lead to misfires, including a cylinder-specific misfire like P0310.