New Denso Diesel Pressure Valve

The diesel pressure valve OE code 9665523380 is originally manufactured by Denso, the OEM supplier of the common rail injection system on many diesel engines. In car manufacturers' catalogs this component also appears under other codes: it is always the same fuel pressure regulating solenoid valve, also known as the Denso SCV (Suction Control Valve).

In short, the OE component is Denso, but there are valid aftermarket OEM-quality alternatives.

This valve is fitted on diesel vehicles with Denso medium-pressure common rail systems (1600 bar), mainly on 2.2-liter 4-cylinder engines developed by PSA, Ford, Mazda and others.

Technical characteristics and operation

• Type: modulating solenoid valve
• Control: PWM at 100–150 Hz, current 0–1 A
• Mounting: on the high-pressure pump body (inlet)
• Construction: metal body, 2-pin connector, o-ring + flat gasket

It regulates the amount of diesel drawn by the high-pressure pump, dosing the upstream rail pressure, improving engine efficiency and response.

At rest it is closed and opens progressively according to the ECU signal. It prevents overpressure, waste and instability.

Typical operating values:

• Rail target pressure 1600 bar, up to 1800+ in evolved systems
• Separate safety valve present on the rail

The responsiveness and accuracy of the SCV are essential for dynamic pressure control.
On some vehicles (for example Ford), after replacement a learning procedure in the ECU may be required.

Model applications

CITROËN

• JUMPER Bus
• JUMPER Panel van
• JUMPER Flatbed/Chassis cab

FIAT

• DUCATO Bus
• DUCATO Panel van
• DUCATO Flatbed/Chassis cab

FORD

• TRANSIT Bus
• TRANSIT Panel van
• TRANSIT Flatbed/Chassis cab
• TRANSIT TOURNEO Bus

ISUZU

• D-MAX

LAND ROVER

• LAND ROVER DEFENDER Convertible
• LAND ROVER DEFENDER Pick Up
• LAND ROVER DEFENDER Station Wagon

NISSAN

• NISSAN NP300 NAVARA
• NISSAN NP300 NAVARA Flatbed/Chassis cab
• NISSAN NP300 PICKUP
• NISSAN PATHFINDER III
• NISSAN PICK UP

OPEL

• MERIVA B MPV / Space wagon

PEUGEOT

• BOXER Bus
• PEUGEOT BOXER Panel van
• PEUGEOT BOXER Flatbed/Chassis cab

SUBARU

• FORESTER
• SUBARU IMPREZA 2-door / Fastback
• SUBARU LEGACY IV
• SUBARU LEGACY IV Station wagon
• SUBARU OUTBACK

DIPA recommends always checking the compatibility of the spare part before purchase.

Typical faults

• Seizure of the internal piston
• Mechanical wear
• Dirt or filings from a worn pump
• Hardened o-ring and diesel leaks

Symptoms:

• Unstable idle ('hunting')
• Difficulty starting (especially when hot)
• Power loss / hesitation under acceleration
• Engine warning light on
• 'Limp mode'

Conclusions

DIPA offers a wide range of spare parts: from originals to aftermarket items selected among the best manufacturers on the market. Not only that: it has reconditioned components with performance equal to new, allowing savings on replacement and contributing to environmental protection through the circular economy. If the part you need is not available, don't worry: DIPA can recondition your item 'on demand', restoring full functionality and safety in a short time.