Parts for your 2001 Honda Accord-Crank angle sensor

2001 Honda Accord crank-angle sensor: purpose, service and replacement

Based on technical references including Honda’s 1998–2002 Accord Service Manual (Helm Inc.), OEM parts catalogues, and common OBD‑II diagnostic listings (DTC P0335–P0339 for CKP), the 2001 Honda Accord is fitted with a crank-angle sensor (also called a crankshaft position sensor, CKP). On 4‑cylinder F23A models it’s mounted at the oil pump housing by the crank pulley, on J30A1 V6 models it’s at the lower timing cover reading the crank sprocket.

The crank-angle sensor is the ECU’s timekeeper. It tracks crankshaft speed and position so the computer can fire the injectors and spark at exactly the right moment. On the 4‑cyl Accords that still run a distributor, the car also uses cam/distributor signals, but the CKP remains critical for accurate timing and misfire detection. If it drops out, the engine can crank with no start, randomly stall at lights, or feel flat and hesitant.

There’s no routine “service” interval for the sensor, but a quick check during timing belt or front-seal work is smart. Look for oil leaks at the front main seal that can weep onto the sensor, cracked wiring insulation, a loose connector, or damage from road debris. Keeping the harness clipped in its original retainers helps prevent rubbed-through wires and intermittent cut-outs.

When replacement is needed, go genuine or a reputable OE‑quality brand. The job differs slightly by engine:

• 4‑cyl F23A: remove the drive belt and crank pulley to access the sensor at the oil pump area.
• V6 J30A1: access at the lower timing cover near the crank sprocket.

Avoid prying on the plastic body, replace any O‑ring, and clean the mounting face so the fixed air gap is correct. The sensor isn’t adjustable—correct seating is what sets the gap. Route the lead exactly as Honda did to keep it clear of the belt and pulleys.

After fitting, clear codes and perform an idle relearn if battery power was disconnected. If a CKP‑related fault (like P0335/P0336) returns, check the trigger wheel for damage, verify continuity on the signal and ground wires, and confirm the connector pins aren’t spread. Most owners find that once the sensor and wiring are sorted, hot restarts, random stalls, and cold‑start flare-ups are all tidied up nicely.

Typical signs it’s on the way out:

• Cranks but won’t start, especially hot
• Intermittent stalling or sudden cut-out
• Rough idle, misfire feel, poor fuel economy
• Check Engine Light with P0335–P0339

FAQs

Where is the crank-angle sensor on a 2001 Accord?
On 4‑cyl F23A engines it’s mounted at the oil pump housing behind/near the crank pulley. On the J30A1 V6 it’s at the lower timing cover, reading the crank sprocket. Access usually involves removing the drive belt and crank pulley (4‑cyl) or lower cover (V6).

Does it need programming after replacement?
No special coding is required. Clear any fault codes and do an idle relearn if the battery was disconnected. If a CKP code returns, inspect wiring, connector fit, and the trigger wheel rather than looking for software updates.

What’s the best brand to fit?
An OEM Honda sensor or a high‑quality OE‑equivalent from a known supplier is recommended. Cheaper units can work, but they’re more likely to cause intermittent faults or early failure, especially with heat soak.

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