News

The Short Version

This sensor is the sealed reed-switch float that tells your BCM whether the washer reservoir still holds fluid. It covers the Nissan 350Z, Quest and Sentra plus the INFINITI Q60 and QX80, replacing Nissan OEM references 28930-XXXX and INFINITI cross-platform equivalents across the FM and V36/V37 platforms. Full fitment notes are on the product page.

• Body and seal: PPS-GF40 rated SAE J2665; EPDM seal per ASTM D2000 M4HK.
• Bus behavior: passive analog output on CAN-bus 2.0B and the transitional CAN FD protocol adopted by Nissan, INFINITI, Toyota and Ford for 2025–2026 model years; backward-compatible with 2026 CAN-bus 3.0 / CAN XL, no arbitration conflict.
• DTC range: B2681–B2683 and P20EE–P20F3 (body and chassis fluid-level rationality).
• Environment: ISO 16750-4 cycling; –40°C to +125°C per ISO 21780.
• Lifecycle: projected 2026–2030.
• Cybersecurity: the passive output adds zero attack surface under ISO 21434-aware component validation and loads nothing on SENT or LIN subnets.

Key Specs at a Glance

Every value below comes from the validated 2026 technical matrix for this sensor.

Why the Housing Moved to PPS-GF40

The 2026 industry shift reaches your washer reservoir: housings moved from PA66-GF30 nylon to PPS-GF40, polyphenylene sulfide reinforced with 40% glass fiber. GM's 2026 Global B electrical architecture and Tesla's Cybertruck/Semi sensor suite already mandate the same upgrade.

The failure it kills is methanol-induced stress cracking in legacy nylon housings on vehicles running high-methanol winter washer fluid — a documented pattern on the 350Z (Z33) and Quest (RE52). Aged nylon also swells hygroscopically in fluids above 60% methanol. The seal is the other half of the fix: methanol permeates aged EPDM, reaches the reed switch and drives it permanently closed.

DTC Mapping: What Each Code Means

• B2681 — Washer Fluid Level Switch Circuit Range/Performance. The classic full-tank false-warning code.
• B2682 — Circuit Low, typically a short to ground.
• B2683 — Circuit High, typically a short to B+.
• P20EE–P20F3 — fluid-level rationality codes used by 2026 Nissan/INFINITI ADAS Domain Controllers for camera-wash availability.

On 2026 models with the Nissan/INFINITI ProPILOT 3.0 architecture, a washer-fluid-low state can cascade into ADAS camera degradation warnings through P20EE derivative mapping. Forward-camera cleaning logic is federally mandated under updated NHTSA FMVSS 111 rear visibility and forward-sensing rules.

The fault tree is also cross-validated against GM Global B and Ford AAD diagnostic architectures, so independent-shop scan tools interoperate without OEM-only tooling.

Fitment Matrix and 2026 Status

Cross-referenced against the Nissan FAST EPC (Electronic Parts Catalog) 2026 Q1 update, INFINITI Global BCM firmware v3.2.1 and ALLDATA 2026 OEM connector pinout diagrams.

What Changes Per Platform

INFINITI Q60 (CV37) and QX80 (Z62)

Q60 builds — including the 2026 Red Sport 400 — and the QX80 (Z62, 2025–2026) use a 2-pin sealed Metri-Pack 150 connector that holds IP67K integrity under high-pressure underhood washdown. 2026 Q60 VC-Turbo trims are supported because reservoir geometry is identical to the 2017–2025 model years.

Nissan Sentra (B18) and Quest (RE52)

On the Sentra (B18, 2024–2026) and the Quest (RE52, final production years), the sensor directly replaces the OEM float switch that Nissan TSB NTB16-032 flagged as a repeat warranty item. If yours has eaten more than one sensor, this ends that loop.

Nissan 350Z (Z33), 2003–2009

The Z33 runs a 2-pin Sumitomo MT connector instead of Metri-Pack 150. The sensor ships with an adapter pigtail to bridge the generations, and float logic stays identical across Z33 through Z62: float up is closed circuit (tank full), float down is open circuit (tank low).

Install Sequence and BCM Reset

1. Pull your OEM number and match it against the matrix: 28930-CD00A, 28930-1JA0A, 28930-3SG0A, 28930-4GA0A or 28930-EZ30A.
2. Swap the sensor. On a Z33, use the included adapter pigtail for the Sumitomo MT connector.
3. Reset the BCM — with Consult-VI, or by disconnecting the negative battery terminal for 15 minutes.
4. Clear B2681–B2683 with your scan tool and watch the float state toggle open and closed with fluid level.

If a code returns after a correct reset, the fault sits deeper in the body-electrical side. The Koeep starters, alternators and ECUs collection is where to source replacement modules, wiring and related electrical hardware.

Related Parts and Guides

Already have the 350Z or Quest on a lift? Add the camshaft position sensor for the 2006–2018 Frontier, 350Z and Quest to the same order — shared vehicle family, one shipping cycle.

Running a 3.5L VQ? The 6-piece fuel injector set for Altima, Maxima, Murano, Pathfinder, Quest and 350Z 3.5L covers the injector side of those same engines.

Wrenching on the earlier 2004–2009 Quest too? The front lower control arm, ball joint and sway bar suspension kit — 2026 technical review and buyer's guide lays out what to inspect and when to replace.

Order Direct or Send an RFQ

The Wiper Washer Fluid Level Sensor for Nissan 350Z, Quest, Sentra, INFINITI Q60 and QX80 ships as a direct-fit replacement with the Z33 adapter pigtail included. For bulk quantities, fleet pricing or a fitment check against your build, pick a route below.

Prefer direct contact? Email support@koeep.com or message us on WhatsApp — send a photo of your old sensor and get a fitment answer fast.

FAQ: 2026 Failure Signatures and Fitment