Parts for your 2006 Honda Cr-v-Tx valve

2006 Honda CR‑V TX Valve — Purpose, Service Tips, and When to Replace

Based on technical sources including the Honda CR‑V 2002–2006 Service Manual (HVAC/Refrigeration section), the Honda electronic parts catalogue for the 2006 CR‑V, and Denso HVAC training materials, the 2006 Honda CR‑V uses a thermal expansion valve (TX valve or TXV), not an orifice tube. It’s a block‑type expansion valve mounted at the evaporator inlet inside the HVAC case.

The TX valve’s job is to meter the flow of R‑134a into the evaporator, matching refrigerant flow to heat load. By controlling superheat at the evaporator outlet, it helps the air‑con cool consistently in Aussie and Kiwi conditions—whether it’s a mild morning or a scorching arvo. When it’s working right, cabin temps stabilise quicker and the compressor isn’t overworked.

For owners keeping a 2006 CR‑V in top nick, attention to the TX valve during A/C servicing is smart. Typical TX valve issues include sticking (either starved or flooded evaporator), hunting (pressures swing), and internal contamination after a compressor failure. Telltales can be weak cooling at idle, icy suction line near the firewall, uneven vent temps, or pressure readings that don’t settle.

• Recommended service pairings: If the system’s opened, replace the receiver‑drier/desiccant, renew O‑rings, and evacuate/recharge properly.
• Access and location: The valve sits at the evaporator inlet, behind the dash near the glove box (access varies RHD vs LHD). Expect HVAC case access, so allow workshop time.
• Refrigerant/oil: Charge is typically about 500–550 g of R‑134a. Use the specified PAG (ND‑OIL 8), adding a small amount if components are replaced—follow the Service Manual figures.
• Cleanliness matters: After any compressor debris (“black death”), flush lines and condenser where applicable, or replace components per Honda procedure to protect the new TXV.

Replacement guidance is straightforward: diagnose with manifold gauges and thermometer first, don’t condemn the TXV without ruling out low refrigerant, condenser airflow issues, or a tired compressor. When replacing, torque the valve to spec, fit new O‑rings with the correct oil, pull a deep vacuum (minimum 30 minutes on a warm day), then weigh in the refrigerant. A quick post‑service check—vent temps, stable pressures, and no frosting where it shouldn’t be—confirms it’s all sweet.

Technical sources referenced: Honda CR‑V 2002–2006 Service Manual (A/C System – Refrigerant Cycle and Expansion Valve procedures), Honda Parts Catalogue for 2006 CR‑V (expansion valve listing), Denso HVAC Fundamentals (TXV operation and diagnostics).

• Does a 2006 Honda CR‑V have a TX valve or an orifice tube?
  It’s fitted with a TX valve. Honda’s service literature and parts listings for the 2006 CR‑V specify a block‑type expansion valve at the evaporator inlet, not an orifice tube. That design gives better control of evaporator superheat and more stable cooling.
• Where is the TX valve located on a 2006 CR‑V?
  It’s mounted on the evaporator inlet inside the HVAC case behind the dash, typically accessed from the passenger side near the glove box. Access differs slightly between right‑hand‑drive and left‑hand‑drive models.
• What are common signs the TX valve needs attention?
  Weak or intermittent cooling, frost on the suction line at the firewall, pressure readings that surge or don’t stabilise, and a starved or flooded evaporator. After compressor failure, contamination can also jam the valve.