Parts for your 2012 Honda Accord-Crank angle sensor

2012 Honda Accord crank angle sensor: what it does, and when to replace it

For the 2012 Honda Accord, a crank angle sensor is absolutely fitted and relevant. Honda’s own Factory Service Manual for the 2012 Accord (PGM-FI section) specifies a crankshaft position (CKP) sensor—often called a crank angle sensor—as a primary engine timing input. Honda’s genuine parts catalogues for the K24 2.4L four-cylinder and J35 3.5L V6 also list a CKP sensor for these engines. Industry guides such as Autodata and Haynes mirror this, noting CKP signal use for ignition and fuel control.

On this Accord, the crank angle sensor keeps the engine control unit in the loop on exactly where the crankshaft is and how fast it’s spinning. That data lets the ECU fire the coils and injectors at the right moment, manage variable valve timing, and keep the idle nice and steady. On the K24 four-cylinder, the sensor sits down the front of the engine near the crank pulley, on the J35 V6 it’s mounted at the back of the block near the bellhousing.

There’s no routine replacement interval for the sensor—it’s a “replace when faulty” item—but it’s smart to give it a quick once-over during servicing. Under the bonnet, check the wiring loom for chafe, oil contamination, or broken clips, and make sure the connector is clean and seated properly. A failing sensor can cause hard starting, random stalling, sluggish acceleration, rough idle, or the MIL coming on with codes like P0335–P0339.

When replacement’s on the cards, go for a quality OEM or OE-equivalent part. The air gap isn’t adjustable on these engines, so fitment is straightforward: disconnect the battery, remove the retaining bolt, swap the sensor and O-ring, route the harness exactly as per the factory path, then torque to spec from the service manual. After installation, clear any fault codes and perform an idle learn if needed, most Hondas will sort themselves after a short drive cycle, but a scan tool makes it tidy. Avoid blasting the area with brake cleaner—use a gentle wipe to keep debris out of the connector and off the sensor face.

If the Accord has been splashed with oil leaks around the crank area, sorting the leak early helps protect the sensor and saves headaches down the track. A quick visual check each service can prevent a no-start on a cold Kiwi morning or a hot Aussie arvo.

• Common fault codes: P0335, P0336, P0337, P0338, P0339
• Tell-tales: long crank, misfire feel, stall at lights, MIL on
• Tools: basic hand tools, scan tool to confirm signal and clear codes

Popular questions

Where is the crank angle (CKP) sensor on a 2012 Honda Accord?

On the 2.4L K24, it’s typically at the front of the engine near the crank pulley and oil pump area. On the 3.5L J35 V6, it’s usually at the rear of the engine block by the transmission bellhousing. Access is from under the vehicle or through the wheel arch, so axle stands and proper safety gear are a must.

Do I need to program or “relearn” the CKP sensor after replacement?

Generally, no special programming is required on this Accord. Clear the fault codes and perform an idle learn if the battery has been disconnected. A brief drive cycle lets the ECU confirm the signal. If codes persist, double-check wiring, connector seating, and torqueing.

Can a bad crank angle sensor cause intermittent stalling?

Yes. A weak or dying CKP sensor can drop signal as it heats up, causing sudden stalls or a no-start when hot. It may also trigger P0335–P0339. Verifying sensor output and harness integrity with a scan tool or oscilloscope helps confirm the diagnosis before replacing parts.