Good question. Here’s a breakdown of what we know about the ABS pump / modulator for a 2015 Honda Accord — and some clarifications about the codes like ''T2N / T2MM2 / T2-something,'' and what you should check if you’re replacing or describing the part. I was unable to find credible public documentation for a part code exactly ''T2N'' or ''T2MM2'' — but I can show you how the ABS pump works on a 2015 Accord and typical part-number codes used, which may help you identify/confirm what ''T2N / T2MM2'' refers to.

✅ What is the ABS pump / modulator on a 2015 Honda Accord

• The ABS pump (or ABS modulator / control-module + hydraulic pump assembly) is a critical part of the Anti-lock Braking System (ABS) in the Accord. Its job is to regulate hydraulic brake pressure when the system detects wheel lock-up (when a wheel is about to stop spinning under heavy braking). Instead of letting the wheels lock — which can cause skidding and loss of steering — the ABS pump rapidly adjusts (reduces then re-applies) brake pressure so that wheels keep rolling and the driver retains steering control.  
• When ABS engages (e.g. on slippery roads or during sudden braking), you may feel a slight pulsation/vibration at the brake pedal — that’s normal and shows ABS pump and modulator are working.  
• The ABS pump module includes: valves to modulate brake pressure, hydraulic lines, and an electronic control module (ECU) that gets wheel-speed sensor inputs to decide when to activate pump/valves.  
• When the ABS is not functioning (e.g. pump or module fault), the normal braking still works — but you lose the anti-lock safety benefit: wheels may lock on hard braking, increasing risk of skid.  

🔢 Typical Part Numbers for 2015 Accord ABS Pump — and why ''T2N / T2MM2'' may be ambiguous

• For 2015 Accord, common OEM part numbers for the ABS pump / modulator assembly include 57110-T2F-L82 (or written ''57110T2FL82'').  
• Some aftermarket / rebuilt pump assemblies list numbers like 04571-T2G-L71 for 2014–2015 Accord ABS pump modules.  
• Another reference lists ''57110-TL1-G231-M1 / 06210951783'' as a rebuildable ABS pump for Accord 2008–2015 2.0-litre models.  
• I found no authoritative source that lists a code exactly as ''T2N'' or ''T2MM2'' for a 2015 Accord ABS pump or module.

Implication: It’s possible ''T2N'' or ''T2MM2'' is:

• A mis-reading or mis-typing of the correct part code (e.g. ''T2F'', ''T2G'', ''T2M'', ''T2L'', etc.), or
• A workshop / internal code used by a parts reseller or in a used-part listing (not official OEM), or
• Referring to a sub-component (e.g. brake-servo, power-booster, or master pump) rather than the ABS pump module itself.

For example, I saw ''01469-T2M-P01'' used for a brake servo/power-booster assembly for some Accord T2M / T2A variants — but that’s not the ABS pump. 

⚠️ What to check / do if you’re trying to describe or replace ABS pump on 2015 Accord

If you have a 2015 Accord and suspect ABS pump issue (or want to order a replacement), do the following:

• Check the OEM part number on your original unit. The number is usually stamped or printed on the ABS modulator housing — e.g. ''57110-T2F-L82'' or similar. Only with matching part number can you ensure compatibility.
• Check vehicle variant / engine / transmission type. ABS pump assemblies may differ depending on variant (e.g. 2.4 L vs 2.0 L; AT vs CVT vs manual). A wrong pump may fit physically but not function correctly.
• Expect re-coding / re-programming if you install a rebuilt or replacement ABS module — many sellers of rebuilt modules explicitly state ''coding required upon installation.''  
• Have a qualified workshop do the installation and brake bleeding. ABS installation is not just a bolt-on: brake hydraulic lines, sensors, and ABS control module must be properly connected and bled.

🎯 What I Recommend You Do (Given the Uncertainty of ''T2N / T2MM2'')

1. Remove the ABS pump from your car and copy down the full OEM part number (all digits/letters). That’s the most reliable way to know what pump you actually have.
2. Compare with known official part numbers for 2015 Accord — e.g. 57110-T2F-L82, 04571-T2G-L71, etc.
3. If you only have ''T2N / T2MM2,'' treat it cautiously — verify with seller or workshop, or ask them to confirm the full OEM number or compatibility.

If you like — I can try to pull up a full list (≈ 10–20) of confirmed ABS pump / modulator part-numbers for 2014–2016 Honda Accord (with variants: 2.0-litre, 2.4-litre, CVT, AT, hybrid, etc.). Itu boleh bantu kamu semak apakah ''T2N / T2MM2'' sesuai ke tak. Mau saya sediakan?