Parts for your 2005 Honda Cr-v-Tx valve

2005 Honda CR‑V TX‑valve: purpose, service tips, and when to replace

From technical sources, the 2005 Honda CR‑V is fitted with a thermal expansion valve (TX‑valve/TXV). Honda’s 2002–2006 CR‑V Service Manual covers evaporator and expansion valve procedures in the HVAC section, the Honda OEM parts catalogue lists a “Valve Assy., Expansion” (e.g., 80220‑S9A‑A01) for this model, and common aftermarket catalogues (DENSO First Time Fit and Four Seasons) specify a matching TXV. So, yes—this CR‑V uses a TX‑valve.

On this model, the TX‑valve meters R‑134a into the evaporator based on outlet temperature and pressure, keeping superheat in the sweet spot so the cabin cools quickly without flooding the compressor. It helps deliver steady vent temps at cruise, protects the compressor from liquid slugging, and reduces icing during cooler conditions. The CR‑V uses a block‑style TXV mounted on the evaporator inside the HVAC case behind the glovebox, so access is from the cabin side with the system de‑gassed.

TX‑valves aren’t a scheduled service item, but they’re worth attention whenever the air‑con is weak at idle, the evaporator ices up, pressures are skew‑whiff on the gauges, or there’s intermittent cooling after a hot soak. If the system’s been open to atmosphere or there’s been compressor debris, the valve can stick or clog.

Replacement and service pointers for a 2005 CR‑V:

• Have a licensed air‑con tech recover the refrigerant—de‑gassing is mandatory in AU/NZ.
• Remove the glovebox/HVAC case as per the Honda Service Manual to access the TXV on the evaporator.
• Fit new O‑rings lubricated with the correct oil (PAG 46/ND‑OIL 8 for DENSO systems). Torque the TXV fasteners to spec (around 10 N·m, verify in the manual).
• If the old valve shows debris, replace the receiver/drier element and consider flushing lines and condenser. A compressor replacement warrants a full clean‑out.
• Evacuate for at least 30 minutes, then charge by weight per the under‑bonnet label. Leak‑test and verify stable low‑side operation and cold, consistent vents.

For longer A/C life, owners should keep the cabin filter fresh, ensure the condenser isn’t packed with bugs or bent fins, and run the air‑con regularly—even in winter—to circulate oil and keep seals supple.

Popular questions about 2005 Honda CR‑V TX‑valves

Q: How can someone tell if the TX‑valve is failing on a 2005 CR‑V?
A: Common signs include slow cool‑down, cold air only while driving but not at idle, evaporator icing, or very low/high low‑side pressure with a normal charge. A stuck‑shut TXV starves the evaporator, stuck‑open can flood it. Proper diagnosis with manifold gauges and temperature checks is best.

Q: Can a TX‑valve be cleaned instead of replaced?
A: If contamination is minor, a flush and new drier sometimes restore performance, but a sticking or scored valve is best replaced. Cleaning rarely undoes moisture damage or debris from a failing compressor, and the labour overlap often makes replacement the smart call.

Q: Where exactly is the TX‑valve on the 2005 CR‑V?
A: It’s a block‑style valve bolted to the evaporator inside the HVAC case behind the glovebox area. Access typically requires removing interior trim and the evaporator housing, then re‑sealing, evacuating, and recharging the system.