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International 4700Lpx Exhaust Backpressure Sensors

International 4700Lpx Exhaust backpressure sensors

Starting at low prices, AutoBuffy carries multiple exhaust backpressure sensors from top OE-quality brands for the International 4700Lpx. This sensor monitors exhaust pressure differential across the DPF or catalytic system and feeds real-time data to the ECM. When it fails, the engine management system loses a critical input, triggering limp mode, failed emissions tests, and accelerated filter damage.

Signs your International 4700Lpx needs a new exhaust backpressure sensor

  • Check Engine Light illuminated with DPF-related fault codes (typically P2452, P2453, or P2454)
  • Engine enters limp mode or derate, limiting power and top speed unexpectedly
  • Diesel particulate filter regeneration cycles triggering too frequently or not at all
  • Erratic or flatlined backpressure readings visible on a scan tool during acceleration
  • Black or excessive soot buildup from the exhaust, indicating incomplete regeneration
  • Fuel economy drops noticeably due to incomplete or absent DPF regen cycles

Which exhaust backpressure sensor should you buy for your International 4700Lpx?

The main decision is whether to match the OEM specification exactly or choose an aftermarket equivalent that fits your budget. Sensor design, connector type, and pressure range must match your International 4700Lpx's exhaust system, so confirming compatibility by year and trim before purchasing is essential.

OEM-Equivalent (Direct Fit)
Best for
Owners who want a plug-and-play replacement with no calibration
What you get
Identical connector, pressure range, and mounting bracket to the factory sensor; no ECM relearn required in most cases
Premium Aftermarket (e.g., top OE-quality brands)
Best for
High-mileage vehicles or fleets needing improved durability
What you get
Enhanced sealing and corrosion-resistant housing; often includes updated design revisions over the original
Economy / Value Grade
Best for
Short-term fix or vehicles nearing end of service life
What you get
Lower upfront cost; functional replacement that meets basic spec but may use lighter-grade materials
Sensor + Harness Kit
Best for
Vehicles with corroded or damaged wiring at the sensor connector
What you get
Includes pre-terminated pigtail or full harness section, eliminating the most common cause of repeat failures

Replacing the exhaust backpressure sensor on a International 4700Lpx

Easy⏱ 30–60 minutesOBD-II scan tool (to read and clear fault codes)Metric socket and ratchet setFlathead screwdriver (for hose clamps)Penetrating oil (for corroded mounting bolts)Nitrile gloves (exhaust components retain heat)

Allow the exhaust system to cool completely before starting. Disconnect the electrical connector, remove the mounting fasteners, and carefully detach the pressure sampling hoses, noting their routing before disconnection. Install the new sensor, reconnect the hoses and connector, then use a scan tool to clear fault codes and confirm the new sensor reads plausible pressure values during a short test drive.

Frequently asked questions

How much does it cost to replace exhaust backpressure sensors on a International 4700Lpx?
Parts start at low prices on AutoBuffy. A shop will typically add one to two hours of labor on top of that. DIY replacement keeps the total cost to the part price alone, since the job generally requires only basic hand tools and is accessible on most vehicles without a lift.
Can I drive my International 4700Lpx with a bad exhaust backpressure sensor?
Short distances are possible, but it is not advisable. A faulty sensor can prevent DPF regeneration, leading to a clogged filter that causes internal engine damage or requires expensive forced regeneration at a dealer. Many International 4700Lpx engines will also enter a power-limiting derate mode, making driving unsafe at highway speeds.
Will replacing the exhaust backpressure sensor clear the Check Engine Light on my International 4700Lpx?
Yes, in most cases. If the sensor itself was the source of the fault code, replacing it and clearing the ECM with a scan tool will extinguish the light. If the light returns, additional issues such as a clogged DPF, damaged hose connections, or a wiring fault at the connector should be investigated.
How do I know if it is the sensor or the DPF hose that is causing the problem on my International 4700Lpx?
Inspect the small rubber or silicone pressure sampling hoses that connect the sensor to the exhaust pipe first. These hoses crack, collapse, or clog with soot before the sensor itself fails. A scan tool showing a flatline zero-pressure reading at idle is a strong indicator of a disconnected or blocked hose rather than a failed sensor.
Does the exhaust backpressure sensor on a International 4700Lpx need to be programmed after replacement?
Most direct-fit replacement sensors are passive pressure transducers and require no programming or relearn procedure. The ECM reads the sensor's output signal immediately after installation. However, clearing existing fault codes with a scan tool after the repair is always recommended to allow the system to verify the new sensor is operating correctly.
How long does an exhaust backpressure sensor last on a International 4700Lpx?
Service life varies widely based on driving conditions, exhaust heat cycles, and exposure to road salt. Sensors on vehicles used predominantly for short trips — which prevent full DPF regeneration — tend to fail sooner due to soot contamination of the pressure ports. General replacement intervals range from several years to the life of the vehicle.

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Exhaust backpressure sensors for other International models

International 1652SCInternational 3600International 3800International CXTInternational 1652UPSInternational 4700