2025 Honda Odyssey: A/C Refrigerant & Oil Specifications
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Quick answer
- Refrigerant type: R-1234yf
- Full system charge: 25.6 oz (725g)
- PAG oil type: PAG 46
- PAG oil amount: 4.5 oz (135 mL)
- Low-side service port location: Near the firewall on the passenger side
- High-side service port location: In front of the radiator on the passenger side
Why R-1234yf matters
The 2025 Honda Odyssey uses R-1234yf refrigerant, a newer, more environmentally friendly alternative to the R-134a used in older vehicles. R-1234yf has a much lower global warming potential (GWP) than R-134a, making it a more sustainable choice. However, it is also more expensive and requires special equipment for service. R-1234yf systems operate at higher pressures than R-134a systems, so it is important to use the correct equipment and procedures when servicing them.
Recharge procedure
A proper A/C recharge is not a simple DIY task. It requires evacuating the system to remove all air and moisture, then charging it with the precise amount of refrigerant by weight. Over- or under-charging can damage the A/C system, so it is important to have this service performed by a qualified technician.
Common A/C problems for this vehicle
The most common A/C problems for this generation of Honda Odyssey include:
- Compressor failure: The A/C compressor is the heart of the system, and it can fail for a variety of reasons, including lack of lubrication, a refrigerant leak, or an electrical problem.
- Condenser issues: The condenser is located in front of the radiator, and it can be damaged by road debris. A clogged or damaged condenser can prevent the A/C system from cooling properly.
- Evaporator leaks: The evaporator is located inside the dashboard, and it can be difficult to access. A leak in the evaporator can cause a loss of refrigerant and a decrease in cooling performance.
When to call a pro
If you are experiencing any of the following problems with your A/C system, it is time to call a professional:
- The A/C is not blowing cold air.
- The A/C is making strange noises.
- The A/C is leaking water.
- The A/C is not working at all.
Safety disclaimer: It is important to note that you must be EPA 609 certified to legally service R-1234yf A/C systems. This certification ensures that you have the proper training and equipment to handle this refrigerant safely.
Find a certified A/C shop on Repairius.
More specs for the 2025 Honda Odyssey
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2025 Honda Odyssey Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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