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DEF SENSOR : OEM ASP01DS11-FF

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,150.00

AVAILABILITY IN STOCK
OEM NUMBERASP01DS11-FF
PART TYPEDEF Sensor
BRANDDuraWRX
ENGINE MAKE
ENGINE TYPE
YEAR
PART NUMBERASP01DS11-FF
ADDITIONAL NOTESDEF Sensor, Digital Canbus

PRODUCT DESCRIPTION

This is a Remanufactured, DuraWRX DEF Sensor, DuraWRX part number ASP01DS11-FF ( OEM Part Number ASP01DS11-FF ). This part is primarily made for a , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: DEF Sensor, Digital Canbus

OEM NUMBERS

Primary OEMASP01DS11-FF
Additional OEM077905V015-02, 1113741-001, 3433760, 32860168, 46699860, 4812011101, 500-2873, 520045P, 621114-3, 717257, ASP01DS11-FF, GS382974, SP161168

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT3.00 LBS

SHIPPING OPTIONS

Ship Weight : 3.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

"This Product Doesn't Have a Core"


The OEM ASP01DS11-FF DEF Sensor is designed to provide accurate monitoring of diesel exhaust fluid levels and temperature within modern emissions systems. Built to original specifications, this sensor ensures proper communication with engine control modules and supports consistent emissions functionality. Its direct-fit design allows for seamless installation without requiring system modifications. Whether used during regular maintenance or to address a fault code, this component offers a reliable solution for restoring proper DEF system operation. OEM manufacturing helps ensure dependable integration and long-term use.

PEOPLE ALSO ASKS | BLOG(S)

The OEM ASP01DS11-FF DEF sensor is a key part of modern diesel emissions systems. Designed to monitor the condition and quantity of Diesel Exhaust Fluid (DEF) in the tank, this sensor helps ensure accurate system feedback to the engine control module (ECM). Faulty readings can lead to false alerts, limited engine operation, or non-compliance with emissions regulations.

Whether used in on-highway trucks, agricultural machinery, or industrial equipment, this sensor supports reliable DEF management by sending precise data in real time.

Core features of the OEM ASP01DS11-FF DEF sensor include:

  • Fluid Level Monitoring
    • Measures DEF volume to keep dosing accurate
  • Temperature Detection
    • Ensures DEF remains within required range
  • Durable Housing
    • Designed to withstand vibration, temperature swings, and fluid exposure
  • OEM Electrical Interface
    • Compatible with standard control systems
  • Compact Design
    • Fits various DEF tank configurations across multiple platforms

Before replacement, always confirm compatibility using the OEM part number ASP01DS11-FF to avoid installation issues.

This DEF sensor is ideal for vehicles and equipment operating under emissions-controlled environments where precise DEF monitoring is essential.

A failed DEF (Diesel Exhaust Fluid) sensor can cause serious drivability concerns and trigger warning lights. Since modern diesel engines rely on emissions systems to operate correctly, it's important to catch DEF sensor issues early.

Common Symptoms of a Bad DEF Sensor:

  • Check engine light or DEF warning light
  • Incorrect DEF level readings (e.g., stuck on full or empty)
  • “Service DEF System” or “No Start in XXX Miles” messages
  • Reduced speed warnings or limp mode activation

Diagnostic Steps:

  • Scan for fault codes
    • Use an OBD-II or professional scan tool. Look for codes like:
      • P203F: Reductant Level Low
      • P204F: Reductant System Performance
      • P207F: Reductant Quality Performance
  • Check the DEF tank level manually
    • Compare actual fluid level to what the sensor reports.
  • Inspect DEF fluid quality
    • Poor-quality or contaminated fluid can mimic sensor failure. Test for proper urea concentration (32.5%).
  • Examine sensor wiring and connectors
    • Look for signs of corrosion, pin damage, or loose connections.
  • Check for technical service bulletins (TSBs)
    • Some vehicles have known DEF sensor failures covered by extended warranties.

If sensor failure is confirmed, replacement is usually necessary. Prompt action helps avoid further system restrictions or vehicle downtime.

Common causes include contamination, DEF crystallization, electrical connector issues, or exposure to excessive heat.

While it is designed to operate in cold environments, extreme freezing conditions can slow sensor response or lead to DEF crystallization.

No scheduled maintenance is required, but it should be inspected if DEF-related codes or inaccurate readings appear.

It is built to handle typical vibration in diesel applications but can fail prematurely if exposed to excessive shock or improper mounting.