Parts for your 2009 Honda Cr-v-Throttle position sensors

2009 Honda CR‑V throttle position sensors (TPS): what they do and how to look after them

Based on Honda technical references — including the 2007–2011 CR‑V Service Manual (Fuel & Emissions: Electronic Throttle Control System) and Honda Technical Training materials — the 2009 Honda CR‑V does use throttle position sensors. In this model, the throttle body is electronically actuated (drive‑by‑wire) and contains dual throttle position sensors (TP Sensor A and TP Sensor B). These sensors are non‑adjustable and typically serviced as part of the throttle body assembly. Related OBD‑II diagnostics include codes such as P0121–P0123 and P2135 noted in Honda service literature.

The throttle position sensors report the exact angle of the throttle plate to the engine control unit. That real‑time signal helps the ECU nail fuelling and ignition timing, manage idle speed, smooth out gear changes in the auto, and keep features like cruise control and stability systems behaving properly. On this drive‑by‑wire setup, the ECU cross‑checks the throttle position sensors against the accelerator pedal position sensors for safety and accuracy.

There’s no routine replacement interval for the TPS on the 2009 CR‑V. Sensible maintenance focuses on keeping the throttle body clean and the electrical connections healthy. A clean air filter helps minimise grime at the throttle plate. When cleaning, avoid forcing the plate by hand and don’t flood the sensor area with solvent — a targeted throttle body cleaner and a careful approach go a long way. Checking the connector for moisture or corrosion is worthwhile, especially on vehicles that see wet, coastal, or dusty conditions common in Australia and New Zealand.

Signs that point to throttle position sensor trouble include:

• Erratic idle, stalling, or hesitation off the line
• Surging, limp‑home behaviour, or cruise control dropping out
• Check engine light with codes like P0122, P0123, or P2135

On this CR‑V, TPS faults are usually addressed by replacing the throttle body assembly (new gasket recommended). After any throttle body work or ECU reset, an idle/throttle learn should be performed so the ECU can relearn the blade position at idle. Common practice is to warm the engine to operating temperature with all accessories off, then allow it to idle undisturbed for several minutes so the ECU can stabilise control. A scan tool can also command a throttle/idle relearn per Honda service procedures. Typical workshop time is around an hour, always follow Honda torque specs and procedures from the relevant service manual.

FAQs

Does the 2009 CR‑V have a separate, replaceable TPS?
The 2009 CR‑V uses an electronic throttle body with dual built‑in TPS (Sensor A and B). Honda service information treats them as non‑adjustable and typically replaced with the throttle body assembly. Some aftermarket kits exist, but correct alignment and a relearn procedure are critical.

How is throttle/idle relearn done after throttle body service?
Honda procedures call for bringing the engine to full operating temperature with all loads off, then allowing a stable idle period so the ECU can relearn the throttle plate position. Many technicians also use a scan tool function to initiate/confirm the learn. If the radiator fan cycles during the process, allow additional idle time to finish the adaptation.

What fault codes suggest a TPS problem on a 2009 CR‑V?
Factory diagnostics associate TP sensor faults with codes such as P0121 (range/performance), P0122 (low), P0123 (high), and P2135 (sensor correlation). The ECU compares the two throttle sensors and the accelerator pedal sensors, mismatches will set a code and may trigger limp‑home mode.