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Parts for your 2001 Honda Accord-Throttle position sensors
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2001 Honda Accord throttle position sensor: what it does and how to look after it
Referencing technical sources, the 2001 Honda Accord does use a throttle position sensor (TPS). The Honda 2001 Accord Service Manual (Helm), Honda’s electronic parts catalogue, and common OBD‑II diagnostics (DTCs P0121–P0123/P0124) all document a TPS fitted to both the 2.3L F23 four‑cylinder and the 3.0L J30A V6. It’s mounted on the throttle body and sends the throttle plate angle to the powertrain control module (PCM).
On this Accord, the TPS tells the PCM how far the throttle’s open so it can fine‑tune fuelling, ignition timing, idle speed control and, on autos, shift quality. That signal also helps with A/C idle‑up and emissions strategies, so when the TPS goes wonky, the car can feel doughy off the line, surge, or shift harshly, and usually lights the check engine lamp.
There’s no set replacement interval—these sensors are replaced when faulty. As part of routine servicing, it’s smart to inspect the TPS connector and wiring, especially for brittle insulation or green corrosion in the plug. When cleaning the throttle body, keep solvents away from the sensor itself and don’t flood the shaft area, a sticky plate can mimic TPS issues.
- Typical symptoms: hesitant take‑off, hunting idle, poor fuel economy, harsh shifts (auto), and codes P0121/P0122/P0123/P0124.
- Quick checks: on a scan tool, the throttle angle/voltage should rise smoothly from closed to wide open. With a multimeter, expect roughly ~0.5 V closed to ~4.5 V wide open with no dead spots.
- Replacement notes: on many F23 throttle bodies the TPS is factory‑riveted, replacement involves carefully drilling the rivets, fitting screws, and—if the sensor is slotted—setting base voltage at closed throttle per workshop specs. The J30A V6 is typically screw‑mounted and non‑adjustable.
- After replacement: clear codes and perform an idle learn. Warm the engine, switch off all loads, then let it idle for several minutes so the PCM can stabilise airflow and throttle angle references.
- Parts choice: genuine or quality aftermarket sensors work well, avoid no‑name units with erratic sweep.
With a bit of care, the TPS on a 2001 Accord is straightforward to test and, if needed, swap—restoring crisp throttle response and smooth shifts.
Popular questions
Where is the TPS on a 2001 Accord?
It’s bolted to the throttle body, opposite the throttle cable linkage, with a three‑wire plug. Look near the round throttle plate housing, the TPS sits on the end of the throttle shaft.
Does the TPS need calibration after fitting?
On many 2.3L F23 units with slotted mounting, yes—set the closed‑throttle voltage to spec using a multimeter before tightening. The 3.0L J30A V6 is generally non‑adjustable, the PCM will handle idle learn after installation.
Can a dirty throttle body trigger TPS codes?
A sticky throttle plate can cause erratic readings and drivability issues that feel like a bad TPS. However, TPS codes often point to the sensor or its circuit. Always check the connector and wiring, clean the throttle body correctly, then retest.
