Parts for your 2023 Honda Cr-v-Tx valve

2023 Honda CR‑V TX‑Valve (A/C Expansion Valve)

Technical conclusion: The 2023 Honda CR‑V is fitted with an A/C expansion valve (commonly called a TX‑valve). This is documented in Honda service information for the 2023 CR‑V HVAC system (component location and removal/installation procedures) and shown in the Honda Genuine Parts catalogue/eStore as a “Valve Assy., Expansion” within the A/C line/heater unit diagrams. Function and role of the valve align with DENSO’s technical literature on thermal expansion valves used in modern automotive air‑conditioning systems.

The CR‑V’s TX‑valve is the bit that meters refrigerant into the evaporator, keeping the core right on the sweet spot—cold enough to chill the cabin, but not so cold it ices up. It senses outlet temperature/superheat and adjusts flow on the fly, which helps the air‑con cool quicker at start‑up, stay consistent in stop‑start traffic, and use less energy compared with a basic orifice setup. On 2023 models (including hybrid variants), the valve sits at the evaporator on the HVAC case, with the refrigerant lines passing through the firewall.

It’s not a routine service item, but it benefits from a healthy system around it. Fresh cabin filters keep airflow up over the evaporator, clean condensers and working radiator fans help heat rejection, and using the air‑con regularly keeps seals lubricated. Always stick to the factory‑specified refrigerant and oil, in most markets that’s R‑1234yf with the correct PAG or POE oil as specified by Honda.

When should a CR‑V owner think about the TX‑valve? A proper diagnosis comes first, but these clues point that way:

• Weak or wildly fluctuating cabin temps, especially after a hot soak
• Frosting at the evaporator inlet/outlet or a hissing/ whooshing that never settles
• High high‑side and low low‑side pressures (or vice‑versa) on gauge readings
• Metallic debris found after a compressor issue

Replacement means recovering refrigerant, disconnecting lines at the firewall, accessing the valve at the HVAC case, fitting new O‑rings, and evacuating/recharging by weight to the exact spec. Best practice is to replace the receiver/drier desiccant any time the system’s opened, and to flush lines if a compressor has shed material. Because refrigerant handling is regulated, the job’s one for an ARCtick‑licensed (AU) or certified (NZ) air‑conditioning technician with the correct recovery gear and a vacuum pump.

For owners planning broader A/C work—like a compressor swap—it’s smart insurance to replace the TX‑valve at the same time. Done right, the CR‑V’s air‑con will blow cold, stay stable, and go the distance.

• Where is the TX‑valve on a 2023 Honda CR‑V?
  It’s mounted at the evaporator on the HVAC case. Access typically involves removing the glovebox/trim inside and disconnecting the A/C lines at the firewall under the bonnet.
• How long does a TX‑valve last?
  Often the life of the vehicle. It’s usually only replaced if it sticks, clogs, or after compressor failure/contamination.
• Can a faulty TX‑valve damage the compressor?
  Indirectly, yes. A stuck valve can cause abnormal pressures and poor lubrication. If contamination is present, both valve and compressor can suffer.