Parts for your 2004 Honda Cr-v-Throttle position sensors

2004 Honda CR‑V throttle position sensor: what it does and when to replace it

Technical sources confirm the 2004 Honda CR‑V is fitted with a throttle position sensor (TPS). The Honda Factory Service Manual for 2002–2004 CR‑V (Fuel & Emissions—Throttle Body/TP Sensor), mainstream workshop information systems used in Australasia (e.g., Alldata/Mitchell), and Honda’s electronic parts catalogue all document a 3‑wire TPS integrated into the cable‑operated throttle body on the K24A1 engine. The manual details diagnostics for DTCs such as P0122/P0123 and notes the TPS is part of the throttle body assembly and not sold separately by Honda.

On this model, the TPS tells the engine control module exactly how far the throttle plate is open. That data is blended with inputs from the MAF/MAP, coolant temp, and O2 sensors so the ECU can meter fuel, manage ignition timing, and keep idle steady. Get the TPS signal wrong and you’ll cop rough idle, flat spots, hunting revs, or higher fuel use.

For servicing a 2004 CR‑V, the TPS is worth a look whenever there’s a hesitation, erratic idle, or a check engine light with a TP‑related code. Because Honda integrates the sensor into the throttle body, the official fix for a failed sensor is to replace the throttle body assembly. Some aftermarket TPS units exist, but they require careful fitment and calibration. If going that route, a scan tool and multimeter are a must—closed‑throttle voltage typically sits around the half‑volt mark and should sweep smoothly to about 4.5 V at wide open throttle with no dropouts.

Good preventative maintenance goes a long way:

• Clean the throttle body and the idle air passages while the intake hose is off—use proper throttle cleaner and avoid flooding the TPS connector.
• Inspect the TPS connector and wiring for corrosion or broken conductors, especially near the plug where the loom flexes.
• If the battery has been disconnected or the throttle body replaced/cleaned, perform an idle learn procedure so the ECU relearns baseline airflow.
• On cable‑throttle cars, check the throttle cable for correct free play—too tight can skew idle and TPS readings.

If the CR‑V is showing symptoms and stores P0122/P0123, P0121, or inconsistent throttle percentage on scan data, it’s time for proper testing. Where the TPS proves faulty, most workshops in Australia and New Zealand will quote a complete throttle body to keep reliability and calibration spot‑on.

Popular questions about 2004 Honda CR‑V throttle position sensors

Does a 2004 Honda CR‑V use a throttle position sensor or drive‑by‑wire?
Yes, it uses a conventional throttle position sensor on a cable‑operated throttle body. Drive‑by‑wire came later on other Honda models, but the 2004 CR‑V (K24A1) sticks with a cable and a 3‑wire TPS feeding the ECU.

Can the TPS be replaced on its own, or does the whole throttle body need changing?
Honda supplies the TPS as part of the throttle body and specifies replacing the assembly. Some aftermarket sensors can be fitted, but they require careful alignment and calibration with a scan tool and multimeter. Many workshops prefer the complete throttle body for a lasting, hassle‑free repair.

What are the common signs or fault codes for a failing TPS on a 2004 CR‑V?
Expect erratic idle, surging, flat spots under light throttle, and increased fuel use. The ECU may log P0122 (low TP voltage), P0123 (high TP voltage), or P0121 (range/performance). If codes reappear after cleaning and connector checks, deeper testing of the sensor signal is warranted and replacement may be on the cards.