Description
New Pressure Sensor for Volvo Diesel Engines, Part Number 21403962
Why Choose This Volvo Pressure Sensor From HHP?
- Brand new construction built to OEM specifications for proper fitment and function
- Manufactured in an ISO 9001:2015 certified facility for quality and consistency
- Crafted with hard-wearing strength and durability to handle the demands of daily heavy duty operation
- No core charge required
- Backed by a 1 Year Warranty from HHP
- Cross references 21403962, 23488881, 7421403962, and 8CL004
- Fits Volvo ALL engine families
Why Pressure Sensor Failures on Volvo Diesel Engines Cannot Wait
Pressure sensors are small components that carry big responsibilities. On a Volvo diesel engine, pressure sensors monitor critical system pressures across multiple circuits including boost pressure, oil pressure, fuel rail pressure, and exhaust backpressure depending on their location in the engine. Each sensor continuously sends real-time pressure data to the engine control module, and the ECM uses that data to make constant adjustments to fueling, timing, turbocharger operation, and aftertreatment system function.
When a pressure sensor begins to drift, fail, or send inaccurate readings, the ECM is working with bad information. The downstream effects depend on which circuit the sensor is monitoring, but the results are consistently harmful. A failing boost pressure sensor can cause the ECM to under-fuel the engine, resulting in power loss and poor fuel economy. A faulty oil pressure sensor can mask dangerously low oil pressure conditions that would otherwise trigger a shutdown to protect the engine. An inaccurate exhaust backpressure sensor can disrupt DPF regeneration cycles and contribute to aftertreatment fault codes and derate conditions. In every case, a failed pressure sensor creates a gap between what the ECM thinks is happening and what is actually happening inside the engine, and that gap costs you power, fuel, and in some cases major engine damage.
Replacing a failed pressure sensor promptly with a quality new unit closes that gap immediately. At $42.00, it is one of the most cost-effective repairs available for a Volvo diesel engine, and it protects components that cost orders of magnitude more to repair or replace.
About This Volvo Pressure Sensor
This is a brand new pressure sensor, HHP part number 21403962, engineered as a direct fit replacement for Volvo diesel engines across all engine families listed under the Volvo ALL designation. It cross references OEM and aftermarket part numbers 21403962, 23488881, 7421403962, and 8CL004. If your existing sensor carries any of these numbers, this unit is the correct replacement.
This is one of the most compact and lightweight parts HHP carries, at just 0.125 lbs and shipping in a 1.8 by 2.6 by 3 inch package. There is no core charge on this sensor, so no deposit is required and nothing needs to be returned after installation. Because diesel engine parts are engine specific, entering your Engine Serial Number or VIN on the product page before ordering allows HHP’s team to verify fitment for your specific Volvo application before the part ships, helping prevent the cost and delay of an incorrect order.
Get Your Volvo Pressure Sensor From Highway and Heavy Parts
At just $42.00 with no core charge, a 1 Year Warranty, and same-day shipping on in-stock orders placed by 2PM EST, this is one of the fastest and most affordable repairs you can make on a Volvo diesel engine experiencing pressure related fault codes or performance issues. HHP’s ASE certified technicians are on staff to help you identify which pressure sensor circuit is causing problems, confirm fitment, and answer any installation questions before and after your purchase.
Order your Volvo Pressure Sensor (21403962) from HHP today.
Frequently Asked Questions About Volvo Pressure Sensor (21403962)
1. What engines does pressure sensor 21403962 fit?
This sensor is built for Volvo diesel engines across all engine families listed under the Volvo ALL designation. HHP recommends submitting your Engine Serial Number or VIN before ordering so our team can confirm this is the correct sensor for your specific Volvo application before the part ships.
2. What OEM part numbers does 21403962 replace?
This pressure sensor cross references 21403962, 23488881, 7421403962, and 8CL004. If your existing sensor carries any of these numbers, this is the correct replacement.
3. Is this pressure sensor new or remanufactured?
This is a brand new pressure sensor manufactured in an ISO 9001:2015 certified facility to meet OEM specifications and tolerances. It is not remanufactured, reconditioned, or rebuilt.
4. What does a pressure sensor do on a Volvo diesel engine?
Pressure sensors monitor critical system pressures throughout the engine and report real-time readings to the ECM. Depending on their location, they may track boost pressure, oil pressure, fuel rail pressure, or exhaust backpressure. The ECM uses this data to manage fueling, timing, turbocharger operation, and aftertreatment system function. Accurate pressure data is essential for the engine to operate efficiently and safely.
5. What are the symptoms of a failing pressure sensor on a Volvo engine?
Common symptoms include active fault codes related to pressure circuit performance or signal range, reduced engine power or derate conditions, poor fuel economy, rough or inconsistent performance under load, irregular turbocharger behavior, and in some cases warning lights related to oil pressure or boost pressure. The specific symptoms depend on which pressure circuit the failed sensor is monitoring.
6. Can a faulty pressure sensor cause engine damage on a Volvo diesel?
Yes. A failed oil pressure sensor, for example, can mask a genuine low oil pressure condition that would otherwise trigger a protective shutdown, allowing the engine to run without adequate lubrication and causing serious internal damage. Other pressure sensors can contribute to derate conditions, aftertreatment failures, and accelerated wear in related systems if left unaddressed.
7. Is there a core charge on this pressure sensor?
No. This Volvo pressure sensor carries zero core charge. There is no deposit required at checkout and nothing to return after the installation is complete.
8. What warranty comes with this pressure sensor?
HHP backs this Volvo pressure sensor with a 1 Year Warranty covering quality and fitment from the date of purchase.
9. How fast will this sensor ship?
In-stock orders placed by 2PM EST ship the same day, Monday through Friday. The sensor weighs just 0.125 lbs and ships in a 1.8 by 2.6 by 3 inch package via UPS or FedEx, making it one of the quickest parts to arrive regardless of your location.
10. Can HHP help me identify which pressure sensor is causing my fault codes before I order?
Yes. HHP has ASE certified technicians on staff who can review your fault codes and engine information to help pinpoint which pressure circuit is failing and confirm that part number 21403962 is the correct replacement sensor for your Volvo diesel application before your order is placed.
