how to fix P0310 code in Ford Explorer Fifth Generation (2011-2019)

Learn how to diagnose and fix P0310 cylinder 10 misfire in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather required tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, pliers.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 10.
• Unscrew the ignition coil retaining bolts and carefully remove the ignition coil.
• Inspect the spark plug; if worn or fouled, remove it using a spark plug socket and replace it with a new one.
• Install a new ignition coil if the old one shows signs of damage or wear.
• Reinstall the ignition coil, ensuring it is seated properly and tighten the bolts to the manufacturer's specifications (typically around 10-15 lb-ft).

3. Inspect Fuel Injector

• Tools Required: Fuel injector puller (if necessary), cleaning solvent.
• Disconnect the fuel injector connector and inspect the wiring.
• If the injector is suspected to be faulty, remove it using the appropriate tools. Clean or replace the injector as needed.
• Reinstall the fuel injector, ensuring correct orientation and sealing.

4. Perform Compression Test

• Tools Required: Compression gauge.
• Remove all spark plugs to allow for testing.
• Insert the compression gauge into the cylinder 10 spark plug hole.
• Crank the engine for several seconds and note the compression reading. It should meet the manufacturer's specifications (usually between 120-180 psi).
• If the compression is low, further investigation into valve or piston issues is required.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0310 code.
• Start the engine and monitor for any recurrence of the code.