AdBlue Tank 308 1.5 1.6 2.0 HDi

Error Codes:
P20E8 - AdBlue pressure too low

The AdBlue tank with OE code 9818559380 è an integrated component of the SCR (Selective Catalytic Reduction) system installed on PSA vehicles equipped with Euro 6 diesel engines. The module serves to contain the technical urea solution (AdBlue) and to supply it, via an internal electric pump, to the dosing unit located in the exhaust for the reduction of nitrogen oxides (NOx). This component è is essential for compliance with emission regulations and for the proper functioning of the pollution control system.

Technical specifications

The OE tank 9818559380 è made of high-strength plastic and internally houses a’unità pumping unit with level sensors and heating. È designed to operate at low temperatures and maintain stable pressure of the’urea delivered to the exhaust system.

Structure: plastic tank with integratedà pump unit
Power supply: 12 V
Connectors: power line, level signal, heating, pump interface
Capacitàcompatible with Euro 6 vehicles with engines from 1.6 to 2.0 liters
Internal components: pump, filter, level sensor, heating, delivery valve

DIPA canò intervene to revise these spare parts thanks to its experience and expertise.

Functionalityà

The AdBlue tank performs several fundamental functions in the exhaust gas after-treatment system:

• Contains the synthetic urea solution AdBlue (32,5% urea, 67,5% demineralized water)
• Powers, via integrated pump, the’SCR injector located in the exhaust
• Constantly monitors the fluid level thanks to the built-in sensors
• Activates heating to prevent freezing of the’AdBlue at low temperatures
• Communicates with the engine control unit and the emissions control module to adjust the amountà of fluid to be injected

The proper functioning of the tank è is essential to avoid engine shutdown imposed by Euro 6 regulations in case of absence or insufficiency of AdBlue.

Brand and model on which the part è is installed

Peugeot

• 308
• 308 SW

Defects and causes

The main defects found in the OE AdBlue tank 9818559380 are:

• Failure of the internal pump : common cause of urea injection failure
• Level sensor error : incorrect reporting of the remaining liquid quantityà
• Freezing block : malfunction of the internal heating system
• AdBlue warning light on and dashboard messages regarding the needà for refueling even with liquid present
• Seal failure : cracks on the tank body or damage to the cap

The causes are often related to electrical wear of the pump, blockages from crystallization of the’urea, or degradation due to exposure to low temperatures not compensated by effective heating.

Any associated DTC codes

• P20E8 – insufficient pressure in the urea injection circuit

Final conclusions

The AdBlue OE 9818559380 tank è a key element of the SCR system installed on Euro 6 diesel PSA vehicles. Its reliabilityà è is crucial to avoid failures that could block the engine or prevent passing the inspection. In case of malfunction, è it is possible to replace the module with unitsà new, used tested or refurbished.

DIPA supports customers throughout the entire relationship phase, from’order all’after-sales assistance. Youò need to intervene to revise these components and restore them to full functionalityàwith a cost-saving on replacements and a benefit for the’environment thanks to the’circular economy. Also ask about the availabilityà of new or alreadyà revised spare parts ready in stock for quick replacements and reduced vehicle downtime.