Parts for your 2012 Honda Cr-v-Tx valve

2012 Honda CR‑V TX Valve (A/C Expansion Valve)

Referencing the Honda CR‑V (2012) Factory Service Manual HVAC section and the Honda Electronic Parts Catalogue (A/C Expansion Valve, commonly listed as p/n 80220‑T0A‑A01), this model uses a thermostatic expansion valve (TXV) at the evaporator—so a TX valve is absolutely relevant to the 2012 Honda CR‑V, not an orifice tube setup.

The TX valve meters refrigerant into the evaporator based on temperature and pressure, keeping superheat in the sweet spot. That balance is what delivers quick, consistent cooling on hot Aussie and Kiwi days without freezing the evaporator or starving it of refrigerant. In the 2012 CR‑V’s R‑134a system, a healthy TXV helps stabilise vent temps, protects the compressor, and improves demist performance in soggy weather.

It’s not a routine service item, but it deserves a look whenever the air‑con is weak, erratic, or the system has been opened. Whenever the receiver‑dryer/desiccant is replaced after a component failure or contamination, the TXV should be evaluated too. Always use the specified PAG oil (Honda ND‑OIL 8) and new O‑rings lubricated with the correct oil when reconnecting lines.

• Common signs a TXV is crook: poor cooling at idle, ice on the evaporator or lines, rapid vent‑temperature cycling, hissing at the dash, low suction pressure with normal/high head, or the opposite if stuck open.
• If black death/metal debris is found, replace the TXV, flush the lines (where appropriate), fit a new condenser if it’s a parallel‑flow type, and renew the receiver‑dryer/desiccant pack.

Replacement on a 2012 CR‑V typically involves recovering refrigerant, accessing the evaporator/TXV at the HVAC case (behind the glovebox), and separating the expansion valve block from the evaporator core. Fasteners should be torqued to the workshop manual spec, and the system evacuated and recharged by a licensed air‑con technician. Venting refrigerant is illegal in Australia and New Zealand—always use approved recovery equipment.

For owners, keeping the cabin filter fresh helps airflow across the evaporator so the TXV isn’t constantly chasing temperature swings. If the air‑con’s been underperforming or the compressor’s been replaced, it’s smart to have the TXV operation checked as part of the service.

Where is the TX valve on a 2012 CR‑V?

It’s a block‑style valve mounted at the evaporator inlet inside the HVAC case, accessed from behind the glovebox area. The liquid and suction lines bolt to it through the firewall area. Expect trim and glovebox removal to get proper access.

What symptoms point to a failing TX valve?

Erratic or weak cooling, icy lines or evaporator, rapid vent‑temperature cycling, and pressure readings showing very low suction with normal/high head (stuck closed) or high suction with low superheat (stuck open). A professional gauge set and thermometer check will confirm.

Can a TX valve be cleaned or adjusted?

No—there’s no adjustment, and internal contamination can’t be reliably cleaned. If it’s sticking or blocked, replacement is the correct fix, followed by evacuation and recharge with the proper R‑134a charge and PAG oil balance.