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Fitment and OEM Cross-Reference

Engine coverage spans J25A, J30A1-A4, J32A1-A3, J35A1-A9, J35Z2-Z8, and J37A1-A4, including the 2026 Earth Dreams™ direct injection variants with updated knock windowing strategies.

Primary cross-reference part numbers: 30530-P8F-A01, 30530-PV0-A01, 30530-P5A-003, 30530-RCA-A01, SU13880, and KS295. By application:

• 30530-P8F-A01: Accord V6 2003-2017
• 30530-PV0-A01: Pilot 2003-2015
• 30530-P5A-003: MDX 2001-2006
• 30530-RCA-A01: Odyssey 2005-2017
• 30530-RL5-A01: RL 2005-2012
• 30530-TK8-A01: TL 2004-2014
• 30530-5G0-A01: Saturn VUE 2004-2007 with the Honda L66 V6

Running a 2.4L four-cylinder instead of the J-Series V6? That engine needs a different part: the knock sensor for 03-07 Accord, CR-V, and Element 2.4L (30530PNA003).

Material and Signal Integrity Details

PZT-5H Sensing Element

Sensors from 2015-2023 typically use PZT-4 or PZT-5A elements. The PZT-5H formulation here carries a d33 charge constant of about 593 pC/N, a 22% sensitivity gain. That matters in 2026 3.5L DI engines, where direct injection pump noise (1.8 to 3.5 kHz) can mask early detonation signatures.

Resonance is tuned to 26.1 kHz ± 0.3 kHz to sit inside the 2026 Honda ECM's narrow-band filtering window. Output linearity holds within ±1.2% across the full 0-10g vibration input range. Sustained operating range is -40°C to +175°C, past the 2026 ISO 26262 ASIL-B thermal envelope for knock detection in forced-induction and high-compression (11.5:1+) builds.

Connector Housing and Contact System

The 3-pin sealed connector uses 30% glass-fiber-reinforced PBT rated for 150°C continuous duty. That headroom is deliberate: 2026 J35Y8 intake manifold ambient temperatures reach 130°C under sustained load.

Female terminals use a dual-spring contact design with selective gold plating, 0.76 µm Au over 2.54 µm Ni on the mating surface. Contact resistance stays under 10 mΩ after 10,000 thermal cycles from -40°C to +150°C.

• Contact pins are tin-plated brass with 10,000-cycle durability per SAE/USCAR-2 Rev.6.
• The silicone double-lip radial seal holds IP67K after exposure to engine oil, coolant, and 2026-spec low-SAPS 0W-16 lubricants.

DTC Mapping for J-Series Knock Codes

• P0325 (Knock Sensor 1 Circuit Malfunction, Bank 1 Sensor 1; all J-Series V6 1995-2026): usually an open circuit, short to ground, or signal above 4.9V. Check connector terminal integrity first.
• P0330 (Knock Sensor 2 Circuit Malfunction, Bank 2 Sensor 2): common on 2005-2026 J35 MDX and Pilot platforms. Verify the 32 N·m ± 2 N·m torque spec.
• P0324 (Knock Control System Error): knock signal deviation logged across more than 20 drive cycles, on 2005+ J35 MDX, Pilot, Odyssey, and Ridgeline plus 2015+ TLX and RLX. Replace both sensors and connectors as a matched pair.
• P0326 / P0331 (Range/Performance, Bank 1 / Bank 2): often vibration-induced connector fretting. The gold-plated terminal system eliminates this failure mode.
• P06xx series, 2026 (ECU Knock Processing Internal Fault): new with the 2026 CAN FD architecture. Sensors with incorrect impedance can trigger it; this assembly holds 560 kΩ ± 5%.

Honda added P06A3-P06A6 for the 2026 model year: sensor reference voltage correlation codes that resolve once impedance matches at 560 kΩ ± 5%. U0122 and U0401 (lost communication with the knock sensor module, invalid data received) indicate CAN FD bus integrity problems that often trace back to poor connector termination.

Check Fitment on the Koeep Product Page

Specification Comparison

How the KS-HA-2026 stacks up against the OEM sensor (30530-P8F-A01) and generic aftermarket units.

Installation: Torque and Labor

Torque is 32 N·m (23.6 lb-ft) ± 2 N·m, always with a calibrated torque wrench and a deep 24mm socket. Under 28 N·m, the sensor-to-block coupling weakens and high-frequency knock signals drop by 6-12 dB, leaving the ECM blind to light knock events. Over 36 N·m, you risk cracking the PZT-5H ceramic or deforming the sensor base, which shifts resonance out of the detection window.

Apply a thin film of anti-seize compound to the sensor threads only, and keep it off the sensor face and the block mating surface. The Koeep sensor ships with a pre-applied thread locking patch calibrated for the 32 N·m target.

On J-series engines where the knock sensor sits under the intake manifold, budget 3-5 hours of labor for manifold removal and reinstallation. The product page includes the installation guide.

Related Parts Worth Knowing

If your maintenance list includes an eighth-generation Accord, the front brake dust shield guide for 2008-2012 Accords covers protection, installation, and upkeep.

For wider electrical repairs, the starters, alternators, and ECUs collection groups common electronic parts in one place. Tracing air-metering or fueling codes alongside the knock work? Koeep also carries the MAF sensor 37980-RNA-A01 for Civic, Accord, Odyssey, Pilot, and Acura RL, TSX, and ZDX.

Frequently Asked Questions