Oil Pan Replacement

This procedure covers removal and replacement of the oil pan on the 2018-2024 Honda Accord 1.5L Turbo engine, including draining oil, removing subframe components for access, and installing a new oil pan gasket.

Warnings

Tools required

Parts

• Oil pan gasket × 1 — Use OEM specification
• Oil drain plug crush washer × 1 — Use OEM specification
• Engine oil 0W-20 × 1 — Honda Genuine 0W-20

Fluids

• Honda Genuine 0W-20 — 4 qt

Preparation

1. Ensure engine is completely cool to the touch
2. Disconnect negative battery terminal
3. Raise vehicle and support securely on jack stands at all four corners
4. Remove engine under cover and splash shields
5. Install engine support fixture from above or support engine with hoist to prevent movement

Procedure

1. 1

   Drain engine oil
   Place drain pan under oil pan. Remove oil drain plug and allow oil to drain completely. Inspect drain plug threads for damage. Discard old crush washer.
2. 2

   Remove exhaust components
   Disconnect oxygen sensor connectors. Remove exhaust manifold heat shield if equipped. Unbolt exhaust downpipe from turbocharger and remove or lower exhaust to gain clearance for oil pan removal.
3. 3

   Remove front subframe mounting bolts
   Support the front subframe with a transmission jack. Remove the front subframe mounting bolts on both sides. Lower the subframe approximately 2-3 inches to provide clearance for oil pan removal. Do not fully remove subframe.
   ⚠Ensure engine is properly supported from above before lowering subframe to prevent engine movement.
   Torque spec

   Mounting Bolts45 Nm (33 lb-ft)
4. 4

   Disconnect oil level sensor
   Locate and disconnect the electrical connector for the oil level sensor on the oil pan. Remove sensor mounting bolt if necessary for pan removal.
   Torque spec

   Sensor Bolts10 Nm (8 lb-ft)
5. 5

   Remove oil pan bolts
   Remove all oil pan bolts in a crisscross pattern starting from the outer edges working inward. There are typically 16-18 bolts securing the oil pan. Keep bolts organized for reinstallation.
6. 6

   Separate and remove oil pan
   Carefully pry the oil pan away from the engine block using a plastic pry tool at designated pry points. Do not damage the engine block mating surface. Lower the oil pan and remove from vehicle. Oil may still drain when pan is removed.
   ⚠Do not use metal tools that could gouge the aluminum engine block sealing surface.
7. 7

   Inspect oil pump pickup tube
   With oil pan removed, inspect the oil pump pickup tube screen for debris or damage. If pickup tube removal is necessary, unbolt it from the oil pump housing. Clean screen thoroughly if reusing.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
8. 8

   Clean mating surfaces
   Thoroughly clean all gasket material from both the oil pan and engine block mating surfaces using a plastic scraper. Remove all residue with brake cleaner. Ensure surfaces are completely clean and dry. Inspect for damage or warping.
   ⚠Any debris or old gasket material left on mating surfaces will cause oil leaks.
9. 9

   Install new oil pan gasket
   Position the new oil pan gasket onto the oil pan, ensuring all bolt holes align correctly. The gasket should sit flat without any twisting or folding. Some gaskets have adhesive backing; others may require a thin bead of RTV at the engine block corners where gasket meets timing cover.
   ℹ️Follow gasket manufacturer instructions regarding RTV application if specified.
10. 10

    Install oil pan
    Carefully lift the oil pan with gasket into position, aligning it with the engine block. Start all oil pan bolts by hand to ensure proper thread engagement. Do not tighten any bolts until all are started.
11. 11

    Torque oil pan bolts in sequence
    Tighten oil pan bolts in a crisscross pattern starting from the center and working outward. Torque all bolts to specification in multiple passes: first to 6 Nm, then final torque to specification. This ensures even gasket compression.
    ⚠Over-tightening oil pan bolts can warp the pan or crack the aluminum. Use a calibrated torque wrench.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
12. 12

    Reinstall oil level sensor
    Reconnect the oil level sensor electrical connector. If sensor was removed, install with new seal and torque mounting bolt to specification.
    Torque spec

    Sensor Bolts10 Nm (8 lb-ft)
13. 13

    Raise and secure subframe
    Raise the front subframe back to its original position, aligning all mounting points. Install and torque subframe mounting bolts to specification on both sides.
    Torque spec

    Mounting Bolts45 Nm (33 lb-ft)
14. 14

    Reinstall exhaust components
    Reconnect exhaust downpipe to turbocharger using new gasket if required. Reinstall heat shields. Reconnect oxygen sensor electrical connectors.
15. 15

    Install drain plug and fill with oil
    Install oil drain plug with new crush washer and torque to specification. Reinstall engine under covers. Lower vehicle. Fill engine with 4.0 quarts of Honda Genuine 0W-20 oil through oil fill cap.
    ℹ️Always use a new crush washer on the drain plug to prevent leaks.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)

Reassembly

1. Reinstall all components in reverse order of removal
2. Ensure all electrical connectors are properly seated and secured
3. Verify all fasteners are tightened to proper specifications
4. Double-check that engine support fixture is removed before starting engine

Verification

• Reconnect battery negative terminal
• Start engine and allow to idle for 2-3 minutes while monitoring for leaks around oil pan
• Check oil level on dipstick and add oil if necessary to reach full mark
• Turn off engine, wait 5 minutes, then recheck oil level and inspect underneath for any oil leaks
• Road test vehicle and recheck for leaks after reaching operating temperature
• Perform final inspection after 24 hours of normal driving

More procedures for this vehicle