Catalog

VOLVO 31445162 PARKING SENSOR

VOLVO 31445162 PARKING SENSOR

Product Specifications

Product quality
OEM Equivalent Grade
starstarstar
Wholesale price USD $3.54
Wholesale price CNY ¥24
bolt MOQ (Minimal order)
1 pcs
local_shipping Production time
15-50 days
package_2 Shipping Weight: —
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VOLVO 31445162
VOLVO 31270911
VOLVO 314451626
Overview & Operating Principle
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The PARKING SENSOR is an ultrasonic transducer mounted flush in the front or rear bumper fascia that forms part of the parking distance control (PDC) system, continuously measuring the distance between the vehicle and nearby obstacles by emitting high-frequency acoustic pulses at 40–48 kHz and measuring the time-of-flight of the returning echo from any surface within detection range. The sensor body consists of a piezoelectric ceramic element bonded inside an aluminium housing that simultaneously acts as a transmitter — vibrating at the drive frequency when energised by the PDC module — and a receiver — generating a microvolt-level electrical signal when the returning echo causes it to vibrate; this dual-function transducer design eliminates the need for separate transmit and receive elements and is the basis for all current automotive parking sensor designs. The PDC control module activates each sensor in sequence using a multiplexed trigger signal, processes the time between transmission and echo receipt to calculate distance using the speed of sound corrected for ambient temperature, and outputs the result as an audible tone frequency, a visual bar graph on the infotainment display, or a numerical distance readout depending on the vehicle's system specification. Front and rear bumpers typically carry four sensors each, with overlapping detection cones providing continuous coverage across the full bumper width; corner sensors are angled outward to detect obstacles at angles approaching from the side during manoeuvres.

This unit — VOLVO 31445162 — is manufactured to OEM-equivalent specifications: piezoelectric resonant frequency and sensitivity, housing outer diameter and mounting depth for correct flush fit in the bumper bore, detection range and angular coverage, connector pinout and signal protocol, and bezel finish — paintable or pre-coloured — are matched to the original part. Supplied as a direct plug-and-play replacement for standard fitment. Available wholesale from 3.54 USD, MOQ 1 pcs, production lead time 15-50 days.

Parking sensors fail through physical impact damage to the transducer face that disrupts the piezoelectric element's resonant characteristics; through moisture ingress into the housing after seal degradation that corrodes the element bonding and contact surfaces; through connector pin corrosion in the underbumper environment; and through internal piezoelectric element delamination from age and thermal cycling. A sensor that has suffered a minor impact may appear visually undamaged but produce erratic distance readings or a continuous false detection tone — even a hairline crack on the transducer face surface changes its resonant frequency enough to produce incorrect echo timing. Always replace sensors individually after confirming the fault position with the PDC module's built-in diagnostics before removing any sensor from the bumper.

Symptoms & Diagnostics
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Continuous warning tone immediately on selecting reverse gear with no obstacle present — the sensor is detecting a false echo from a crack in its own face, a fragment of debris lodged in the bumper bore adjacent to the sensor, or a crack in the bumper fascia surface immediately surrounding the sensor bore; remove the sensor and inspect the bore and surrounding bumper surface before fitting a replacement.
PDC system warning light or fault message on the instrument cluster identifying a specific sensor position as failed — the PDC module has detected that the sensor at the identified position is not returning a valid echo pattern; confirm the fault position using an OBD-II scanner with PDC module access before removing any sensor; replacing the wrong sensor wastes a component and does not resolve the fault.
Audible clicking or buzzing from one sensor position when the PDC system is active but no distance tone is produced — the sensor is transmitting its ultrasonic pulse but the piezoelectric element's mechanical resonance has shifted from a cracked or contaminated face, preventing correct echo detection; the clicking is the drive circuit attempting to energise a mechanically compromised element.
Distance reading for one sensor that is consistently shorter or longer than the readings from adjacent sensors when approaching the same flat wall — the sensor's resonant frequency has drifted from element damage or contamination, altering its time-of-flight calibration; the PDC module reports the incorrectly scaled distance without flagging a circuit fault because the sensor is still producing an output signal.
PDC system that operates correctly in dry conditions but produces false warnings or complete sensor failure in rain or after a car wash — moisture has entered the sensor housing through a degraded seal; water loading the transducer face alters its acoustic impedance and resonant frequency; the sensor appears serviceable when dry but fails when wet, a pattern that confirms water ingress rather than internal element failure.
No PDC warning tone when reversing toward an obstacle at close range that other sensors are detecting normally — the affected sensor has failed silently; the PDC system continues to operate on the remaining sensors and may not display a warning light if the failure mode does not meet the module's fault detection threshold; a PDC blind spot is a significant safety risk during slow-speed manoeuvres in confined spaces.
Logistics & Customs
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International HS Code
8543.70
EAEU Customs Code (TN VED)
8543 70 900 9
Typical Net Weight
Country of Manufacture
China
Standard MOQ
1 pcs
Production Lead Time
15-50 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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  1. Read and record all PDC fault codes with an OBD-II scanner before removing any sensor — the PDC module identifies the failed sensor by position — front left, rear centre-right, etc — in the fault code description; replacing a sensor without confirming the exact fault position from the module results in removing a serviceable sensor while the failed unit remains installed; always read codes first and confirm which position requires replacement.
  2. Access the sensor connector and retention clip from behind the bumper fascia — reach through the wheel arch liner or by partially removing the bumper undertray to access the rear face of the bumper cavity; press the connector release tab and pull the connector straight back; inspect the connector for green pin corrosion, cracked insulation, and broken locking tabs before connecting to the new sensor.
  3. Release the sensor retention clip by squeezing the clip body tabs inward while pushing the sensor forward out of the bumper bore from behind — never use a metal tool to pry the sensor from the front of the bumper as this scratches the bumper paintwork and can crack the bore edge; the retention clip releases with finger pressure when correctly engaged from the rear.
  4. Match the new sensor colour to the bumper before installation — sensors are available in standard colours including black, silver, and white, or as bare plastic for body-colour painting; if painting is required, apply colour-matched paint to the sensor bezel face only before installation and allow to cure fully before fitting; paint applied over the transducer face area reduces acoustic sensitivity and must never contact the active face surface.
  5. Insert the new sensor into the bumper bore from the front face and push firmly until the retention clip engages with a positive click; the sensor face must sit flush with the bumper surface — a sensor that protrudes beyond the bumper surface will detect the bumper lip as a permanent false obstacle, and a recessed sensor has a reduced detection angle that creates coverage gaps at the bumper corners.
  6. Install the new PARKING SENSOR (VOLVO 31445162), reconnect the wiring connector until it clicks, clear all stored PDC fault codes with a scan tool, engage reverse gear to activate the system, and perform a functional verification test by slowly reversing toward a flat wall — confirm the warning tone begins at the expected detection distance and increases in frequency as the vehicle approaches; test at multiple approach angles to confirm full coverage arc before returning the vehicle to service.
Tools: OBD-II scanner with PDC module diagnostic access, trim clip removal tool, electrical contact cleaner for connector inspection, colour-matched paint if unpainted sensor variant is fitted, flat wall for functional distance verification test.
Frequently Asked Questions
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Should all parking sensors on the same bumper be replaced at once or only the failed unit?
Replace only the sensor identified by the PDC fault code — parking sensors operate independently and do not need to be replaced as a set. The exception is when multiple sensors on the same bumper have failed simultaneously after a parking impact — in this case the wiring harness connector serving the bumper may be damaged, and replacing all physically damaged sensors simultaneously saves repeat bumper access labour. On high-mileage vehicles where one sensor has failed due to seal degradation and moisture ingress, inspect the remaining sensors for moisture evidence at the same time; if multiple sensors show wet interiors, replacing the full bumper set simultaneously eliminates sequential failures within a short period. ok.parts supplies parking sensors individually and in bumper sets of four at wholesale MOQ from 3.54 USD per unit.
Does the PDC system require calibration or adaptation after sensor replacement?
Standard ultrasonic parking sensors do not require calibration after replacement — the PDC module recognises the new sensor automatically when power is applied and the stored fault code is cleared. The sensor's detection parameters are fixed by its physical resonant frequency and are not stored in the PDC module. However, on vehicles with integrated camera and radar ADAS systems where the PDC module coordinates with other driver assistance functions, a system reset or short adaptation cycle via a manufacturer-specific scan tool may be required to re-enable coordinated operation between the new sensor and the other systems. Always clear codes after replacement and confirm no fault codes return during a short test drive before confirming the repair complete.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
Frequently Replaced Together
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PartReason for Combined Replacement
Bumper Fascia
OEM ref. varies by model and year		A parking sensor that has failed from physical impact to the transducer face typically occurs when a minor parking contact deforms or cracks the bumper fascia surface around the sensor bore. Fitting a new sensor into a cracked or deformed bumper bore produces acoustic reflections from the damaged bore wall that generate false detections regardless of sensor condition. Replacing both the sensor and the bumper fascia simultaneously restores correct acoustic geometry at every sensor position.
PDC Wiring Harness
Application-specific bumper harness		The wiring harness connecting all sensors on one bumper is routed through the bumper cavity and is subject to chafing, connector corrosion, and impact damage simultaneously with the sensor. If multiple sensors on the same bumper have failed or the harness shows damaged insulation, replacing the full bumper harness alongside the affected sensors eliminates wiring as a recurring fault source and ensures the new sensors receive correct signal quality.
PDC Control Module
OEM ref. varies by vehicle		If all sensors on both bumpers fail simultaneously or the PDC system becomes completely inoperative after a flooding event or major electrical fault, the PDC control module may have failed rather than the individual sensors. A failed module produces fault codes for all sensor positions simultaneously — a pattern that distinguishes module failure from individual sensor failures where typically only one or two positions show faults. Confirm module supply voltage and ground continuity before ordering replacement sensors when all positions show faults at the same time.